CN105268045B - Pre-filled catheter flusher - Google Patents
Pre-filled catheter flusher Download PDFInfo
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- CN105268045B CN105268045B CN201410223190.3A CN201410223190A CN105268045B CN 105268045 B CN105268045 B CN 105268045B CN 201410223190 A CN201410223190 A CN 201410223190A CN 105268045 B CN105268045 B CN 105268045B
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Abstract
The invention discloses a pre-charging type catheter flusher, which comprises an outer sleeve, a core rod and a rubber plug, wherein the core rod is positioned in the outer sleeve, the rubber plug is arranged at the front end part of the core rod, the core rod comprises an outer core rod and an inner core rod, the inner core rod is slidably arranged in an axial through hole of the outer core rod, and the inner core rod comprises an inner core rod body and an inner core rod pressing hand; a medicine containing groove which is arranged along the radial direction is arranged on the side wall of the front end part of the inner core rod body, a first sealing ring and a second sealing ring are respectively arranged between the outer wall of the inner core rod body and the inner wall of the axial through hole of the outer core rod, the rear end part of the inner core rod body is arranged in the inner core rod handle, and a first clamping, positioning and restraining structure and a second clamping, positioning and restraining structure are arranged between the inner core rod body and the outer core rod body; and a third clamping, positioning and restraining structure is arranged between the axial through hole and the inner core rod pressing hand. The invention can pre-mix the physiological saline and the medicine in the catheter flusher, infuse the therapeutic medicine into the pipeline system in the process of flushing the pipeline, and does not need other puncture, thereby greatly reducing the pollution to the medicine.
Description
Technical Field
The invention relates to a medical instrument, in particular to a prefilled catheter flusher.
Background
At present after having injected the medicine through keeping somewhere the needle, adopt normal saline to wash keeping somewhere the needle catheter usually, but use normal saline to only carry out simple pipeline and wash, can not play any treatment, and if will use the normal saline that adds the medicine to wash, then need puncture to the bottle plug through dispensing at the in-process of dispensing, the rubber on the bottle plug can produce the piece at the in-process of puncture and cause the pollution to the medicine, must not pay back.
Therefore, one of the problems that the skilled person is addressing is how to achieve pre-mixing of saline and drug and infusion of therapeutic drug into the tubing system during flushing of the tubing.
Disclosure of Invention
The purpose of the present invention is to provide a novel, in order to solve the problems, the pre-filled catheter flusher which has a simple structure and is convenient to use is provided.
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The invention relates to a prefilled catheter flusher, which comprises an outer sleeve, a core rod positioned in the outer sleeve and a rubber plug arranged at the front end part of the core rod, wherein:
the core rod comprises an outer core rod and an inner core rod, an axial through hole is formed in the outer core rod, the inner core rod is slidably arranged in the axial through hole, and the inner core rod comprises an inner core rod body and an inner core rod pressing hand connected with the rear end of the inner core rod body;
a medicine containing groove which is arranged along the radial direction is arranged on the side wall of the front end part of the inner core rod body, a first sealing ring and a second sealing ring are respectively arranged between the outer wall of the inner core rod body and the inner wall of the axial through hole of the outer core rod, the first sealing ring is fixed on the inner core rod body and is positioned above the medicine containing groove, and the second sealing ring is fixed on the inner core rod body and is positioned below the medicine containing groove;
an inner core rod body accommodating cavity for accommodating the rear end part of the inner core rod body is formed in the inner core rod handle, and a first clamping positioning constraint structure and a second clamping positioning constraint structure are respectively arranged between the inner wall of the inner core rod body accommodating cavity and the outer wall of the inner core rod body;
a third clamping and positioning constraint structure is arranged between the inner wall of the axial through hole of the outer core rod and the outer wall of the inner core rod press handle;
the reaction force of the core rod pushed forwards is greater than the restraining force of the first clamping positioning restraining structure or the second clamping positioning restraining structure and is less than the restraining force of the third clamping positioning restraining structure;
the upper end of the outer sleeve is provided with a Ruhr joint, and the Ruhr joint is provided with a sheath matched with the Ruhr joint for use;
when the rubber plug is positioned at the lower end of the inner cavity of the outer sleeve, the first clamping and positioning constraint structure and the second clamping and positioning constraint structure are in a clamping state, the third clamping and positioning constraint structure is in a separating state, the front end surface of the inner core rod body is flush with the orifice of the axial through hole positioned at the front end, and the medicine accommodating groove is positioned in the axial through hole and is in an unused state;
when the inner core rod is pushed forwards until the lower end face of the inner core rod is flush with the lower end face of the outer core rod, the first, second and third clamping and positioning constraint structures are in a clamping state, the medicine containing groove completely extends out of the orifice of the front end of the axial through hole to be in a medicine liquid mixing state, and the second sealing ring is positioned in the axial through hole;
when the rubber plug is positioned at the upper end of the inner cavity of the outer sleeve, the third clamping and positioning constraint structure is in a clamping state, the first clamping and positioning constraint structure and the second clamping and positioning constraint structure are in a separating state, the medicine containing groove retracts into the axial through hole to be in a use termination state, and the lower end of the inner core rod body faces the bottom of the containing cavity of the inner core rod body.
The pre-filled catheter flusher comprises a luer conical head and a conical sleeve which is arranged outside the luer conical head and provided with internal threads, wherein the sheath comprises a sheath body which is covered on the luer conical head and two wings which are arranged at the lower end of the sheath body and matched with the internal threads of the conical sleeve.
In the above pre-filled catheter flusher, a third sealing ring is further disposed between the outer wall of the inner core rod body and the inner wall of the axial through hole of the outer core rod, the third sealing ring is fixed on the inner core rod body and located between the second sealing ring and the lower portion of the drug containing groove, and when the pre-filled catheter flusher is in a drug solution mixing state, the third sealing ring is located in the axial through hole.
In the pre-filled catheter flusher, the first engaging and positioning constraint structure includes a first engaging groove formed in the inner wall of the accommodating cavity of the inner core rod body and a first engaging protrusion formed in the outer wall of the inner core rod body and engaged with the first engaging groove in a constrained manner;
the second clamping positioning constraint structure comprises a second clamping groove arranged on the inner wall of the accommodating cavity of the inner core rod body and a second clamping protrusion arranged on the outer wall of the inner core rod body and clamped and constrained with the second clamping groove;
the third clamping positioning constraint structure comprises a third clamping groove and a third clamping groove arranged on the inner wall of the axial through hole of the outer mandrel the third clamping protrusion is arranged on the outer wall of the inner core rod press handle and is clamped and restricted and matched with the third clamping groove;
when the prefilled catheter flusher is in the use termination state, the first clamping protrusion is positioned in the second clamping groove.
The invention can realize the pre-mixing of the normal saline and the medicine, infuse the therapeutic medicine into the pipeline system in the process of flushing the pipeline, and simultaneously, lead the mixing of the medicine and the normal saline to stay in the catheter flusher without other puncture, thereby greatly reducing the pollution to the medicine. The medical nursing bed is simple in structure and convenient to use, and the working efficiency of medical workers is greatly improved.
Drawings
FIG. 1 is a cross-sectional view of the present invention in an unused state;
FIG. 2 is a cross-sectional view of the outer core rod of the present invention;
FIG. 3 is a front view of the core rod body of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view taken along the line A-A in FIG. 3;
FIG. 5 is a cross-sectional view of the plunger rod of the present invention;
FIG. 6 is a sectional view of the present invention in a liquid medicine mixing state;
fig. 7 is a sectional view of the present invention in an end-of-use state.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 5, the prefilled catheter flusher of the present invention is shown in the drawings, which includes an outer sheath 5, a core rod 1 located in the outer sheath 5, and a rubber plug 11 disposed at the front end of the core rod 1, wherein the core rod 1 includes an outer core rod 2 and an inner core rod, an axial through hole 22 is disposed in the outer core rod 2, the inner core rod is slidably disposed in the axial through hole 22, and the inner core rod includes an inner core rod body 3 and an inner core rod pressing hand 4 connected to the rear end of the inner core rod body 3;
a medicine containing groove 31 which is arranged along the radial direction is arranged on the side wall of the front end part of the inner core rod body 3, a first sealing ring 32, a third sealing ring 35 and a second sealing ring 33 are sequentially arranged between the outer wall of the inner core rod body 3 and the inner wall of the axial through hole 22 of the outer core rod 2 and along the axial direction of the inner core rod body 3 from top to bottom, the first sealing ring 32 is fixed in the first containing groove 321 of the inner core rod body 3 and is positioned above the medicine containing groove 31, the second sealing ring 33 is fixed in the second containing groove 331 of the inner core rod body 3 and is positioned below the medicine containing groove 31, and the third sealing ring 35 is fixed in the third containing groove 351 of the inner core rod body 3 and is positioned between the medicine containing groove 31 and the second sealing ring 33;
an inner core rod body accommodating cavity 41 with an opening at the upper end is arranged in the inner core rod handle 4, the rear end part of the inner core rod body 3 is arranged in the inner core rod body accommodating cavity 41, and a first clamping positioning constraint structure 42 and a second clamping positioning constraint structure 43 are respectively arranged between the inner wall of the inner core rod body accommodating cavity 41 and the outer wall of the inner core rod body 3;
a third clamping and positioning constraint structure 21 is arranged between the inner wall of the axial through hole 22 of the outer core rod 2 and the outer wall of the inner core rod pressing hand 4;
the first engaging and positioning constraint structure 42 includes a first engaging groove 422 disposed on the inner wall of the accommodating cavity 41 of the inner core rod body and a first engaging protrusion 421 disposed on the outer wall of the inner core rod body 3 and engaged with the first engaging groove 422;
the second clamping and positioning constraint structure 43 comprises a second clamping groove 432 formed in the inner wall of the inner core rod body accommodating cavity 41 and a second clamping protrusion 431 formed in the outer wall of the inner core rod body 3 and clamped and constrained in the second clamping groove 432;
the third clamping positioning constraint structure 21 comprises a third clamping groove 212 arranged on the inner wall of the axial through hole 22 of the outer core rod 2 and a third clamping protrusion 211 which is arranged on the outer wall of the inner core rod handle 4 and is clamped and constrained with the third clamping groove 212;
the reaction force of the core rod 1 pushed forward is larger than the restraining force of the first clamping positioning restraining structure 42 or the second clamping positioning restraining structure 43, and is smaller than the third engagement location the restraining force of the restraining structure 21;
the upper end of the outer sleeve 5 is provided with a luer connector, and the luer connector is provided with a sheath used in cooperation with the luer connector, the luer connector comprises a luer cone head 51 and a cone sleeve 52 which is arranged outside the luer cone head 51 and is provided with internal threads, the sheath comprises a sheath body 61 covered on the luer taper head 51 and two wings 62 arranged at the lower end of the sheath body 61 and matched with the internal thread of the taper sleeve 52, the sheath is sealingly connected to the luer fitting by two wings 62.
The prefilled catheter flusher of the present invention contains physiological saline and solid drugs, and the solid drugs should be completely dissolved in the physiological saline, the physiological saline is stored in the inner cavity of the outer sleeve 5, and the solid drugs are stored in the drug storage tank 31.
Referring to fig. 1, when the rubber plug 11 is located at the lower end of the inner cavity of the outer casing 5, that is, the inner cavity of the outer casing 5 is filled with physiological saline, and the rubber plug 11 stays at the position of the maximum capacity of the outer casing 5, the first engaging and positioning constraint structure 42 and the second engaging and positioning constraint structure 43 are in the engaging state (that is, the first engaging protrusion 421 is located in the first engaging groove 422, and the second engaging protrusion 431 is located in the second engaging groove 432), the third engaging and positioning constraint structure 21 is in the separating state (that is, the third engaging protrusion 211 is located outside the third engaging groove 212), the front end surface of the inner rod body 3 is flush with the opening of the axial through hole 22 at the front end, the drug containing groove 31 is located in the unused state inside the axial through hole 22, and at this time, the solid drug is stored in the drug containing groove 31, the physiological saline in the outer casing 5 can be prevented from contacting the solid drug due to the sealing function of the first sealing ring 32, and the second sealing ring 33 and the third sealing ring 35 prevent the physiological saline from leaking from the lower end of the axial through hole 22 when the sealing function of the first sealing ring 32 fails.
Referring to fig. 6, when the inner core rod handle 4 is pushed forward until the lower end surface thereof is flush with the lower end surface of the outer core rod 2, the first engaging and positioning restriction structure 42, the second engaging and positioning restriction structure 43 and the third engaging and positioning restriction structure 21 are all in an engaging state (i.e. the first engaging protrusion 421 is located in the first engaging groove 422, the second engaging protrusion 431 is located in the second engaging groove 432, and the third engaging protrusion 211 is located in the third engaging groove 212), the medicine containing groove 31 completely protrudes out of the axial through hole 22 from the upper end surface of the outer core rod 2 to form a mixed medicine liquid through the opening at the front end, and the second sealing ring 33 and the third sealing ring 35 are located in the axial through hole 22, at this time, the solid medicine in the medicine containing groove 31 contacts with the physiological saline and is dissolved in the physiological saline to form a mixed medicine liquid, and the sealing effect of the second sealing ring 33 and the third sealing ring 35 can prevent the mixed medicine liquid from leaking from the lower end of the axial through hole 22.
After the solid medicine is completely dissolved, the sheath is taken down, the prefilled catheter flusher is connected with a device to be flushed according to the actual use requirement, the lower end of the core rod 1 is pushed to inject the mixed liquid medicine into the device to be flushed, and because the reaction force borne by the forward pushing of the core rod 1 is greater than the restraining force of the first clamping positioning restraining structure 42 or the second clamping positioning restraining structure 43, the inner core rod body 3 can return to the axial through hole 22 of the outer core rod 2 in the injection process until the front end face of the inner core rod body 3 is flush with the hole opening of the front end of the axial through hole 22.
Referring to fig. 7, when the rubber plug 11 is located at the upper end of the inner cavity of the outer sheath 5, the third engaging and positioning restriction structure is in an engaging state (i.e. the third engaging protrusion 211 is located in the third engaging groove 212), the first engaging and positioning restriction structure 42 and the second engaging and positioning restriction structure 43 are in a separating state (i.e. the first engaging protrusion 421 is located in the second engaging groove 422), the medicine accommodating groove 31 is retracted into the axial through hole 22 to be in a use termination state, and the lower end of the inner core rod body 3 faces the bottom of the inner core rod body accommodating cavity 41.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore all equivalent technical solutions should also fall into the scope of the present invention, and should be defined by the claims.
Claims (3)
1. A pre-filled catheter flusher comprises an outer sleeve, a core rod positioned in the outer sleeve and a rubber plug arranged at the front end part of the core rod, and is characterized in that,
the core rod comprises an outer core rod and an inner core rod, an axial through hole is arranged in the outer core rod, the inner core rod is slidably arranged in the axial through hole, the inner core rod comprises an inner core rod body and a core rod body an inner core rod press hand connected with the rear end of the inner core rod body;
a medicine containing groove which is arranged along the radial direction is formed in the side wall of the front end part of the inner core rod body, a first sealing ring and a second sealing ring are respectively arranged between the outer wall of the inner core rod body and the inner wall of the axial through hole of the outer core rod, the first sealing ring is fixed on the inner core rod body and is positioned above the medicine containing groove, and the second sealing ring is fixed on the inner core rod body and is positioned below the medicine containing groove;
an inner core rod body accommodating cavity for accommodating the rear end part of the inner core rod body is formed in the inner core rod handle, and a first clamping positioning constraint structure and a second clamping positioning constraint structure are respectively arranged between the inner wall of the inner core rod body accommodating cavity and the outer wall of the inner core rod body;
a third clamping and positioning constraint structure is arranged between the inner wall of the axial through hole of the outer core rod and the outer wall of the inner core rod press handle;
the first clamping, positioning and restraining structure comprises a first clamping groove arranged on the inner wall of the accommodating cavity of the inner core rod body and a first clamping protrusion arranged on the outer wall of the inner core rod body and clamped and restrained with the first clamping groove;
the second clamping positioning constraint structure comprises a second clamping groove arranged on the inner wall of the accommodating cavity of the inner core rod body and a second clamping protrusion arranged on the outer wall of the inner core rod body and clamped and constrained with the second clamping groove;
the third clamping positioning constraint structure comprises a third clamping groove arranged on the inner wall of the axial through hole of the outer core rod and a third clamping protrusion which is arranged on the outer wall of the inner core rod handle and is clamped, constrained and matched with the third clamping groove;
the counterforce of the forward pushing of the core rod is greater than the restraining force of the first clamping positioning restraining structure or the second clamping positioning restraining structure and is less than the restraining force of the third clamping positioning restraining structure;
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When the inner core rod is pushed forwards until the lower end face of the inner core rod is flush with the lower end face of the outer core rod, the first clamping protrusion, the second clamping protrusion and the third clamping positioning constraint structure are in a clamping state, the first clamping protrusion is located in the first clamping groove, the second clamping protrusion is located in the second clamping groove, the third clamping protrusion is located in the third clamping groove, the medicine accommodating groove completely extends out of the orifice of the front end of the axial through hole and is in a medicine liquid mixing state, and the second sealing ring is located in the axial through hole;
when the rubber plug is positioned at the upper end of the inner cavity of the outer sleeve, the third clamping and positioning constraint structure is in a clamping state, the third clamping protrusion is positioned in the third clamping groove, the first clamping and positioning constraint structure and the second clamping and positioning constraint structure are in a separating state, the first clamping protrusion is positioned in the second clamping groove, the medicine containing groove retracts into the axial through hole to be in a use termination state, and the lower end of the inner core rod body faces the bottom of the containing cavity of the inner core rod body.
2. A pre-filled catheter flusher as set forth in claim 1, wherein said luer connector comprises a luer taper and a taper sleeve with an internal thread and arranged outside the luer taper, and said sheath comprises a sheath body covering the luer taper and two wings arranged at the lower end of the sheath body and adapted to the internal thread of the taper sleeve.
3. A pre-filled catheter flusher as set forth in claim 1, wherein a third sealing ring is further disposed between an outer wall of the inner core rod body and an inner wall of the axial through hole of the outer core rod, the third sealing ring is fixed on the inner core rod body and located below the medicine containing groove and between the second sealing ring, and when the pre-filled catheter flusher is in a medicine liquid mixing state, the third sealing ring is located in the axial through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223190.3A CN105268045B (en) | 2014-05-26 | 2014-05-26 | Pre-filled catheter flusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223190.3A CN105268045B (en) | 2014-05-26 | 2014-05-26 | Pre-filled catheter flusher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105268045A CN105268045A (en) | 2016-01-27 |
| CN105268045B true CN105268045B (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410223190.3A Active CN105268045B (en) | 2014-05-26 | 2014-05-26 | Pre-filled catheter flusher |
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| Country | Link |
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| CN (1) | CN105268045B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647808B (en) * | 2018-12-24 | 2019-11-12 | 济民健康管理股份有限公司 | Pre-filled catheter flusher and pre-filled catheter flusher assemble output method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5470319A (en) * | 1994-06-20 | 1995-11-28 | Critical Device Corporation | Needleless injection site |
| CN101091812A (en) * | 2006-06-19 | 2007-12-26 | 上海康德莱企业发展集团有限公司 | Safe type retention needle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202236671U (en) * | 2011-09-26 | 2012-05-30 | 吴林元 | Disposable syringe capable of realizing pre-perfusion of liquid medicine |
| CN203183396U (en) * | 2013-04-16 | 2013-09-11 | 圣光医用制品有限公司 | Pre-charging type catheter flusher |
| CN203400372U (en) * | 2013-07-17 | 2014-01-22 | 曹烽 | Pre-filling type liquid-medicine separated type injection washing device |
| CN203915633U (en) * | 2014-05-26 | 2014-11-05 | 上海康德莱企业发展集团股份有限公司 | A kind of pre-filled catheter flusher |
-
2014
- 2014-05-26 CN CN201410223190.3A patent/CN105268045B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5470319A (en) * | 1994-06-20 | 1995-11-28 | Critical Device Corporation | Needleless injection site |
| CN101091812A (en) * | 2006-06-19 | 2007-12-26 | 上海康德莱企业发展集团有限公司 | Safe type retention needle |
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| Publication number | Publication date |
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| CN105268045A (en) | 2016-01-27 |
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