CN105561434A - Intravenous catheter arranging device - Google Patents
Intravenous catheter arranging device Download PDFInfo
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- CN105561434A CN105561434A CN201410552438.0A CN201410552438A CN105561434A CN 105561434 A CN105561434 A CN 105561434A CN 201410552438 A CN201410552438 A CN 201410552438A CN 105561434 A CN105561434 A CN 105561434A
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- push rod
- rod group
- needle
- needle stand
- syringe
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Abstract
The invention provides an intravenous catheter arranging device. The intravenous catheter arranging device comprises a needle cylinder with an air hole, a needle group, a catheter group sleeved by the needle cylinder and allowing one needle of the needle group to pass through, and a push rod group arranged in the needle cylinder in a penetrating manner and provided with a closed pipe cavity. The needle group further comprises a positioning piece positioned in the needle cylinder, and a needle file limited between the positioning piece and the needle cylinder and communicated and fixedly connected with the needle. The needle file has the air ventilation property, and is provided with a cavity wall defining a cavity and being transparent. Therefore, in the operation process, when the air hole is closed, movement is made by virtue of the push rod group, and testable blood drawing can be carried out, so that the blood returning condition can be monitored; and when the air hole is open, blood automatically flowing back to the cavity from the needle can be observed, so that the operation that an intravenous catheter is correctly punctured into the target blood vessel is confirmed, and the positioning relation between the needle file and the positioning piece is released by virtue of the movement of the push rod group, thus the needle file and the needle are safely concealed in the pipe cavity of the push rod group.
Description
Technical field
The present invention relates to a kind of intravenous catheter setting device, particularly relate to a kind of intravenous catheter setting device taking a sample test draining blood and hiding needle body.
Background technology
Consult Fig. 1, for general intravenous catheter setting device 9, the catheter block 92 consist predominantly of a needle stand 91, being socketed with this needle stand 91, to be connected with this catheter block 92 and hollow can scratch a curved conduit 93, and to be connected with this needle stand 91 and to pass a needle body 94 of this conduit 93.When medical personnel grip this needle stand 91, and puncture into the Ink vessel transfusing of sick body with this needle body 94, just can guide this conduit 93 intravasation, and can after this needle body 94 is extracted out, this conduit 93 is retained in Ink vessel transfusing, and curved characteristic can be scratched with this conduit 93, avoid sick body to have uncomfortable sensation.Now, this catheter block 92 for the transfer line (not shown) of drop or the syringe cylinder (not shown) connection being filled with medicament, can carry out the action of Ink vessel transfusing transfusion injection.
Only, although this catheter setting device 9 can as injection medicament or the medium of monitoring draining blood, but cannot avoid there is the improper exposed situation of this needle body 94 in operation, so, as long as careless slightly, the shortcoming of stabbing medical personnel will be had, even cause the danger that pain of injury fatal infection disease infects, the more important thing is, this catheter setting device 9 itself does not have the function taking a sample test blood, therefore, when sick body blood pressure is not enough to make blood backflow, or the target blood of sick body indefinite and need detection property puncture (as obesity, old, child or female patient) time, just cannot sentence fast and know whether this needle body 94 is correctly set in Ink vessel transfusing with this conduit 93, and the action repeatedly carrying out puncturing of having to, or additional syringe of taking a sample test is to carry out taking a sample test action, the operating time is caused to extend, increase injury and the chance infected, even puncture position need be changed again to be operated and have shortcomings such as increasing Biohazard Waste.
Therefore, in order to improve forgoing conduit, the shortcoming of device 9 on using is set, one of applicant in this case previously institute apply for the TaiWan, China I295182 case of also issued patents, and application number TaiWan, China No. 97101762 case, except having the function taking a sample test blood, more hiding needle body can be reclaimed.But, inventor not as meet, still adhere to excelsior spirit, continue to be engaged in relevant developmental research, thus find aforementioned invention ease of use and functional in, still have the space that can improve.
Summary of the invention
The object of the present invention is to provide a kind of draining blood that can accelerate to show after correct puncture target blood, and promote the intravenous catheter setting device of Clinical practice operation convenience.
Intravenous catheter setting device of the present invention, comprises a syringe, pin group, a conduit set, and a push rod group.
This syringe includes around an axis and defines a surrounding wall in a duct, and be formed in this surrounding wall and be communicated with this duct and an extraneous QI KOU, this surrounding wall has a reverse arrival end and a port of export, and adjoins a Large Diameter Pipeline Duan Yuyi pipe with small pipe diameter section of this arrival end and this port of export respectively;
This pin group includes a keeper, a needle stand of hollow, and a needle body, this keeper can between the surrounding wall of airtight fixing with displacement in this syringe Large Diameter Pipeline sector hole road, this needle stand passes this keeper and is limited between this syringe port of export and this keeper, and have and define around this axis a chamber can breathing freely and a chamber wall of this chamber can be had an X-rayed by this syringe, this needle body and this needle stand conducting consolidation, and there is the cutting tip passing this syringe port of export;
This conduit set includes can unload the liftoff catheter block be nested with in this syringe pipe with small pipe diameter section, and is connected with this catheter block and the flexible conduit passed for this needle body cutting tip; And
This push rod group to be entered in this duct by this syringe arrival end and with this duct around wall energy air tight contact slippingly, and include and define a tube chamber and a tube wall of open end after being formed with a reverse front open end and, a connecting piece, and close an end cap of this rear open end, this connecting piece can unload airtight fixing in this tube chamber, and the front open end of this tube wall contiguous and closed, and push this keeper to remove this keeper and this needle stand with the duct that this tube wall gos deep into this syringe, after airtight fixing relation between this surrounding wall, synchronously make this connecting piece by this needle stand of inlay card under the pressure of the counteracting force of this needle stand, and remove the airtight fixing relation of this connecting piece and this tube wall, make this connecting piece, this needle stand and this needle body are hidden in the tube chamber of this push rod group by a restoring force effect.
Intravenous catheter setting device of the present invention, this QI KOU is formed in this Large Diameter Pipeline segment limit between this keeper and this surrounding wall arrival end.
Intravenous catheter setting device of the present invention, this pin group also has a ventilative partition of concrete dynamic modulus hydrophobic, and this ventilative spacer is in the chamber of this needle stand and one end of this needle stand contiguous this push rod group relatively.
Intravenous catheter setting device of the present invention, the surrounding wall of this syringe also has first stop ring being formed in this Large Diameter Pipeline section inner surface, and this keeper airtightly with displacement can be positioned this first stop ring.
Intravenous catheter setting device of the present invention, the surrounding wall of this syringe also has and is formed in this Large Diameter Pipeline section and the intersegmental shoulder of pipe with small pipe diameter, and the chamber wall of this needle stand is along this Axis Extension and airtightly pass this keeper and be limited between this shoulder and this keeper.
Intravenous catheter setting device of the present invention, this pin group also includes flexible member in cylinder that a bullet opens formula, this interior flexible member is by between this port of export of being contained in after compressing in this syringe pipe with small pipe diameter section and this needle stand, this interior flexible member borrows the airtight fixing positioning relation pushing releasing and this needle stand of this push rod group at this keeper, and this this needle stand of connecting piece inlay card and remove with the airtight snap-fit relationship of this push rod group tube wall after, elastic-restoring force by means of this interior flexible member pushes this needle stand together with this needle body, this connecting piece be moved to be hidden in this push rod group tube chamber in.
Intravenous catheter setting device of the present invention, this push rod group also includes flexible member in pipe that a bullet opens formula, in this pipe, flexible member is contained in after compressing in the tube wall of this push rod group contiguous between this front open end and this connecting piece, in this pipe, flexible member borrows the airtight fixing positioning relation pushing releasing and this needle stand of this push rod group at this keeper, and this this needle stand of connecting piece inlay card and remove with the airtight snap-fit relationship of this push rod group tube wall after, by means of the elastic-restoring force of flexible member in this pipe push this connecting piece to be moved to together with this needle stand and this needle body be hidden in this push rod group tube chamber in.
Intravenous catheter setting device of the present invention, flexible member in the pipe that this push rod group also comprises a contraction type, in this pipe, flexible member is contained in after tension in the tube wall of this push rod group and is also fixed between this rear open end and this connecting piece, in this pipe, flexible member borrows the airtight fixing positioning relation pushing releasing and this needle stand of this push rod group at this keeper, and this this needle stand of connecting piece inlay card and remove with the airtight snap-fit relationship of this push rod group tube wall after, by means of the elastic-restoring force of flexible member in this pipe draw this connecting piece to be moved to together with this needle stand and this needle body be hidden in this push rod group tube chamber in.
Intravenous catheter setting device of the present invention, be more formed with a hermetic closed low pressure space in the tube chamber of this push rod group, the intracavity air pressure in this low pressure space is lower than atmospheric pressure.
Intravenous catheter setting device of the present invention, this push rod group also comprises and airtightly with displacement can be set in this intraluminal plug sleeve, and pass this end cap and to stretch in this tube chamber and the liftoff pull bar linked with this plug sleeve can be unloaded, this pull bar is for drawing the direction displacement of this plug sleeve towards this rear open end, to this rear open end contiguous and the end cap rear section being locked to this rear open end unloads this end cap, this plug sleeve is located and creates this intraluminal low pressure space aforementioned to open end and instantaneity after closing this tube wall.
Intravenous catheter setting device of the present invention, this intravenous catheter setting device also includes an external member group, this external member group comprises a front protecting cover, and an airtight barrier flaps, this front protecting cover is nested with the Large Diameter Pipeline section at this syringe this port of export contiguous, and the cutting tip of this needle body coated and this conduit set, and close this syringe port of export, this airtight barrier flaps is used for the QI KOU closing this syringe, when making this push rod group be in reverse to the direction displacement of this port of export, between this pin group in this duct and this push rod group, form a low pressure space.
Intravenous catheter setting device of the present invention, this external member group also has a locating part, this locating part has a collar, and to link with this collar and one that can perturb pull sheet, this collar is nested with in this syringe Large Diameter Pipeline section and the arrival end of this surrounding wall contiguous, this is pulled sheet and is fastening a primary importance in this collar and this push rod group, and perturb between the second position departing from this push rod group, this push rod group is fixed after createing the low pressure space in this duct and be limited to primary importance pull sheet, maintain the low pressure space in this duct.
Intravenous catheter setting device of the present invention, this connecting piece have around this axis a ring wall, be formed in this ring wall and the joint portion linked with this needle stand, and intercept a barrier bodies between this ring wall, this joint portion can be with the groove of this needle stand chamber wall fit, the bulge loop that engages with this needle stand chamber wall one of them plant.
Intravenous catheter setting device of the present invention, the tube wall of this push rod group also have a minor diameter part of this front open end adjacent, this minor diameter part adjacent a large-diameter portion, be formed in a terrace edge between this large and small footpath portion, and be formed in this tube wall large-diameter portion inner surface and second stop ring of this terrace edge contiguous, this connecting piece also has the outer snap ring being formed in this ring wall outer surface, this outer snap ring is airtight is fastened in this second stop ring, make that this connecting piece is airtight to be positioned in this tube wall, and close this tube wall.
Beneficial effect of the present invention is: the keying by being arranged on the QI KOU on syringe controls, make to be formed between the intraluminal connecting piece of this push rod group and this needle stand to be in communication with the outside or closed state, reach except can the displacement of this push rod group be borrowed and take a sample test blood back, and outside the object of monitoring automatic blood-returning, this needle body can also be hidden in the tube chamber of this push rod group, the more important thing is, this QI KOU is arranged on this syringe upper bound between this needle stand and this arrival end and the position of this keeper contiguous, promote the smoothness of Clinical practice operation, and promote the efficiency bestowed when Ink vessel transfusing infusion tube is arranged, convenience and safety.
Accompanying drawing explanation
Of the present invention other feature and effect, clearly present in reference to graphic embodiment, wherein:
Fig. 1 is a sectional view, and general intravenous catheter setting device is described;
Fig. 2 is a view sub-anatomy, and one first embodiment of intravenous catheter setting device of the present invention is described;
Fig. 3 is a sectional view, and the state after the combination of this first embodiment is described;
Fig. 4 is an enlarged partial sectional view, and the position relationship of a needle stand and a syringe in this first embodiment is described;
Fig. 5 is an enlarged partial sectional view, and the fixing relation of a keeper and a needle stand in this first embodiment, a syringe is described, and the fixing relation of a connecting piece and a tube wall is described;
Fig. 6 is a sectional view, and the using state of this first embodiment is described;
Fig. 7 is an enlarged partial sectional view, to illustrate in this first embodiment that a push rod group pushes this keeper and unloads this needle stand, and makes this connecting piece by the tube wall unloading this push rod group under the pressure of this needle stand;
Fig. 8 is a sectional view, and the needle stand in this first embodiment, a needle body are described, and this connecting piece is hidden in this push rod group;
Fig. 9 is a sectional view, and second embodiment of intravenous catheter setting device of the present invention is described;
Figure 10 is an enlarged partial sectional view, illustrates that in this second embodiment, in a cylinder, flexible member is arranged between a port of export of a syringe and a needle stand;
Figure 11 is a sectional view, illustrates that in this second embodiment, in this cylinder, flexible member bullet is opened and drives this needle stand and a connecting piece, and synchronous interlock needle body is hidden in this push rod group;
Figure 12 is a sectional view, and one the 3rd embodiment of intravenous catheter setting device of the present invention is described;
Figure 13 is an enlarged partial sectional view, illustrates that in the 3rd embodiment, in a pipe, flexible member is arranged on a terrace edge of a tube wall and a wild card interannular of a connecting piece;
Figure 14 is a sectional view, illustrates that in the 3rd embodiment, in this pipe, flexible member bullet is opened and drives a connecting piece, and synchronous interlock needle stand and a needle body are hidden in a push rod group;
Figure 15 is a sectional view, and one the 4th embodiment of intravenous catheter setting device of the present invention is described;
Figure 16 is an enlarged partial sectional view, and after the one end of flexible member in a pipe and connecting piece, the other end and a tube wall one is described in the 4th embodiment, open end links and fixes;
Figure 17 is a sectional view, illustrates that in the 4th embodiment, in this pipe, flexible member draws this connecting piece, and synchronous interlock needle stand and a needle body are hidden in a push rod group;
Figure 18 is an enlarged partial sectional view, and one the 5th embodiment of intravenous catheter setting device of the present invention is described;
Figure 19 is a sectional view, and one the 6th embodiment of intravenous catheter setting device of the present invention is described;
Figure 20 is an enlarged partial sectional view, and the position relationship of a pull bar, plug sleeve, a connecting piece and a tube wall in the 6th embodiment is described;
Figure 21 is a sectional view, illustrates that in the 6th embodiment, this pull bar and this plug sleeve are at a tube chamber intrinsic displacement of a push rod group, and after creating a low pressure space by fixing and part fracture;
Figure 22 is an enlarged partial sectional view, and after illustrating that in the 6th embodiment, this pull bar part fractures, this plug sleeve this tube wall hermetic closed also fixes with an end cap;
Figure 23 is a sectional view, illustrates that in the 6th embodiment, this connecting piece is attracted by the low pressure in this push rod group, and synchronous interlock needle stand and a needle body are hidden in this push rod group;
Figure 24 is a sectional view, and one the 7th embodiment of intravenous catheter setting device of the present invention is described;
Figure 25 is an enlarged partial sectional view, and the fixing relation of a keeper and a needle stand in the 7th embodiment, a syringe is described, and the fixing relation of a connecting piece and a tube wall is described; And
Figure 26 is a sectional view, and the 7th embodiment can open and close QI KOU and an airtight barrier flaps by one, and a locating part, makes to maintain low pressure state in a syringe.
Detailed description of the invention
Before the present invention is described in detail, should be noted that in the following description content, similar element represents with identical numbering.
Consult Fig. 2, Fig. 3, Fig. 4, and Fig. 5, the first embodiment of intravenous catheter setting device of the present invention comprises a syringe 1, pin group 2, conduit set 3, push rod group 4, and an external member group 5.
This syringe 1 comprises around an axis X and defines a surrounding wall 12 in a duct 11, and is formed in this surrounding wall 12 and is communicated with this duct 11 and an extraneous QI KOU 13.This surrounding wall 12 have a Large Diameter Pipeline section 123 of a reverse arrival end 121 and port of export 122, respectively this arrival end 121 adjacent, this port of export 122 adjacent a pipe with small pipe diameter section 124, be formed in a shoulder 125 between this large and small caliber section 123,124, and be formed in this Large Diameter Pipeline section 123 1 inner surfacies and first stop ring 126 of this shoulder 125 contiguous.This QI KOU 13 is formed in this Large Diameter Pipeline section 123 boundary between this first stop ring 126 and this arrival end 121, can be controlled to open and close by operator.
This pin group 2 comprises a keeper 21, needle stand 22, and a needle body 23.This keeper 21 can airtight the first stop ring 126 be positioned in the Large Diameter Pipeline section 123 of this syringe 1 with displacement, makes this QI KOU 13 in the present embodiment preferably position, this surrounding wall 12 of this keeper 21 contiguous.This needle stand 22 is set in the duct 11 of this syringe 1, and pass this keeper 21 and be limited between the shoulder 125 of this syringe 1 and this keeper 21, and between this shoulder 125 and this needle stand 22, be formed with the drag reduction reducing resistance to displacement start spacing I, this needle stand 22 has along the extension of this axis X and defines a chamber wall 222 that can have an X-rayed of a chamber 221 around this axis, be formed in this chamber wall 222 1 outer surfaces and with a ring rib 223 of the airtight fixing of this keeper 21, be placed through a ventilative partition 224 of this chamber 221, and this chamber wall 222 contiguous towards this push rod group 4 one end and be formed in the fastening ring 225 (as Fig. 7) of this chamber wall 222 1 inner surfacies.This ventilative partition 224 is concrete dynamic modulus hydrophobic at the present embodiment, and to intercept the chamber 221 of this needle stand 22 in and to be close to one end of this needle stand 22 this push rod group 4 relative.This chamber wall 222 for can have an X-rayed material, can have an X-rayed this chamber 221 at the present embodiment.This needle body 23 with this needle stand 22 consolidation and with this chamber 221 conducting, and there is the cutting tip 231 passing this syringe 1 port of export 122.
This conduit set 3 includes can unload the liftoff catheter block 31 be nested with in this syringe 1 pipe with small pipe diameter section 124, and is connected with this catheter block 31 and the flexible conduit 32 passed for this needle body 23 cutting tip 231.
This push rod group 4 can airtightly with displacement be set in this syringe 1 large aperture section 123, and tool defines a tube wall 42 of a tube chamber 41, a connecting piece 43, the gas seal member 44 be set in this tube chamber 41 around this axis X, and an end cap 45.This tube wall 42 have open end 422, a minor diameter part 423 of this front open end 421 adjacent, this rear open end 422 adjacent towards this pin group 2 front open end 421, after be in reverse to this front open end 421 one a large-diameter portion 424, be formed in a terrace edge 425 between this large and small footpath portion 424,423, and be formed in this tube wall 42 1 inner surfacies and second stop ring 426 of this terrace edge 425 contiguous.This connecting piece 43 can airtightly with displacement be set in this tube chamber 41, and block the connectedness of this front open end 421 and this rear open end 422, and have around this axis X a ring wall 430, be formed in this ring wall 430 1 outer surfaces and with the outer snap ring 431 of airtight of engaging of this second stop ring 426, be formed in this ring wall 430 and a joint portion 432 that can link with this needle stand 22, and intercept a barrier bodies 433 between this ring wall 430.This joint portion 432 includes a groove 4321 with this needle stand 22 chamber wall 222 fit at the present embodiment, and the bulge loop 4322 engaged with this needle stand 22 chamber wall 222 in this groove 4321.This gas seal member 44 is nested with at this minor diameter part 423 1 outer surfaces, and with this syringe 1 surrounding wall 12 air tight contact.This end cap 45 closes the rear open end 422 of this tube wall 42.
This external member group 5 has a front protecting cover 51, and protecting cover 52 after.This front protecting cover 51 is nested with the Large Diameter Pipeline section 123 at this syringe 1 this port of export 122 contiguous, and this conduit set 3 coated and this needle body 23.This rear protecting cover 52 is nested with the Large Diameter Pipeline section 123 at this syringe 1 this arrival end 121 contiguous, and ring protects the arrival end 121 of this surrounding wall 12, and this push rod group 4 coated and spacing is emerging in the position outside this syringe 1.
Consult Fig. 3, Fig. 6, after getting out sick body preparation the position of this conduit set 3 be set, before first unloading this, rear protecting cover 51, 52, to appear this push rod group 4 and this conduit set 3, and the cutting tip 231 of needle body 23, then, with the surrounding wall 12 of this syringe 1 of the finger grip of one hand, but do not close this QI KOU 13, the Ink vessel transfusing of sick body is punctured into again by this needle body 23 cutting tip 231, just can under the normotensive situation of sick body, guiding draining blood 6 refluxes along this needle body 23 and is fills up in this needle stand 22 chamber 221, to being hampered by this ventilative partition 224, the chamber wall 222 of enable perspective shows draining blood 6, and advise this needle body 23 of medical personnel and this conduit 32 correctly target approach Ink vessel transfusing, now, only need this catheter block 31 of forward, this conduit 32 is made progressively to import in this target blood, just this needle body 23 can be detached blood vessel, this conduit 32 and this catheter block 31, complete and this conduit 32 is imported endovascular operation, this catheter block 31 then energy is connected with general infusion pipeline and carries out fluid infusion.
Consult Fig. 6, Fig. 5, after the cutting tip 231 of this needle body 23 and this conduit 32 front end puncture into sick body, if this sick body blood pressure is not enough to make blood backflow, or target blood outward appearance is indefinite, and need detection property puncture time, the finger synchronization that medical personnel can grip this syringe 1 surrounding wall 12 closes this QI KOU 13, and the tube wall 42 of this push rod group 4 of traction is gripped with another hands, now, the duct 11 of this syringe 1, at this needle body 23 cutting tip 231 with this QI KOU 13 respectively by sick body, operator's hands refers to, and this push rod group 4 is when closing, form airtight closed state, operator only need exert a force and pull back this push rod group 4 along this axis X towards the direction displacement being in reverse to this syringe 1 port of export 122, just can make between this pin group 2 in this syringe 1 duct 11 and this push rod group 4, form a hypobaric purt and inhale space, if when this needle body 23 cutting tip 231 correctly punctures into Ink vessel transfusing, guiding draining blood 6 will be inhaled along this this chamber 221 of needle body 23 filling rapidly by purt, to being hampered by this ventilative partition 224, the chamber wall 222 making this have an X-rayed is display draining blood 6 fast, contrary, if when not having draining blood 6 to be revealed in this needle stand 22 chamber 221, operator can utilize needle body 23 cutting tip 231 having entered sick body, proceed the trimming movement of detection property puncture, the chamber 221 of this needle stand 22 is revealed in aforementioned draining blood 6, and reduce the probability of puncture and pipe guide failure, or determine rapidly the setting position changing this conduit set 3.
What deserves to be explained is, aforementioned push rod group 4 only need before the operation carrying out arranging this conduit set 3, maintain the position that this push rod group 4 gas seal member 44 is positioned at contiguous this keeper 21 middle or contiguous of this syringe 1, and guarantee that this push rod group 4 has the space nargin towards the displacement of this syringe 1 port of export 122, maximum purt can be reached whereby and inhale low pressure space.
In addition, because this syringe 1 duct 11 can be communicated with ambient pressure by this QI KOU 13, therefore, when complete aforementioned this conduit 32 is imported the operation in target blood after, only need keep the unimpeded of this QI KOU 13, just can, in the process of this push rod group 4 of lasting propelling movement towards this syringe 1 port of export 122 direction displacement, the air-flow in this syringe 1 is discharged by this QI KOU 13, and the blood in this needle stand 22 chamber 221 can not be pushed out outside this syringe 1.
Consult Fig. 7, Fig. 8, now, only need continue to push the duct 11 that this push rod group 4 gos deep into this syringe 1, and push this keeper 21 towards this syringe 1 port of export 122 direction displacement, just after this keeper 21 departs from the first stop ring 126 of this syringe 1 and the ring rib 223 of this needle stand 22, the airtight fixing positioning relation of this keeper 21 and this needle stand 22 can be removed.
Simultaneously, in the process of this push rod group 4 towards this syringe 1 port of export 122 direction displacement, because this needle stand 22 can be divided a word with a hyphen at the end of a line after segment drag reduction starts spacing I, be hampered by this syringe 1 shoulder 125 and cannot towards this port of export 122 direction displacement, therefore, along with this push rod group 4 continue to go deep into this duct 11 time, this needle stand 22 is understood first and groove 4321 fit of this connecting piece 43, and link with this connecting piece 43 with the fastening ring 225 of this chamber wall 222 inner edge and bulge loop 4322 inlay card of this connecting piece 43, this connecting piece 43 of reverse extrusion immediately, this outer snap ring 431 is made to depart from the second stop ring 426 of this tube wall 42, and the synchronous airtight snap-fit relationship removing this connecting piece 43 and this tube wall 42.
Whereby, only need this syringe 1 upright, make this port of export 122 upward, this arrival end 121 down, just can utilize this connecting piece 43, this needle stand 22 is together with this needle body 23, and the overall gravity of the draining blood 6 retained in this chamber 221, this connecting piece 43 is made to go deep into the tube chamber 41 of this push rod group 4 together with this needle body 23 to being hampered by this end cap 45 with this needle stand 22, and this needle body 23 is hidden in the tube wall 42 of this push rod group 4, finally, put the port of export 122 that this front protecting cover 51 closes this syringe 1, make the syringe 1 abandoned can isolate this needle body 23 with this surrounding wall 12 with the tube wall 42 of this push rod group 4, exempt medical personnel after completing this conduit 32 is set, contact with this needle body 23 because tidying up this pin group 2, cause needle stick injury, the danger infected.
Consult Fig. 9, Figure 10 and Figure 11, be the present invention's second embodiment, it is roughly the same with this first embodiment, difference be in:
This pin group 2 also includes flexible member 24 in cylinder that a bullet opens formula.This interior flexible member 24 by be contained in after compressing in this syringe 2 pipe with small pipe diameter section 124 between this port of export 122 and this needle stand 22.Whereby, this interior flexible member 24 is borrowed pushing of this push rod group 4 at this keeper 21 and removes the airtight fixing positioning relation with this needle stand 22, and this this needle stand 22 of connecting piece 43 inlay card is also removed and after the airtight snap-fit relationship of this tube wall 42, the elastic-restoring force of this interior flexible member 24 can be borrowed to push this needle stand 22 and be moved to be hidden in the tube chamber 41 of this push rod group 4 together with this needle body 23, this connecting piece 43.
Consult Figure 12, Figure 13 and Figure 14, be the present invention's the 3rd embodiment, it is roughly the same with this first embodiment, difference be in:
This push rod group 4 also includes flexible member 46 in pipe that a bullet opens formula.In this pipe, flexible member 46 is contained in the interior vicinity of tube wall 42 of this push rod group 4 between this front open end 421 and this connecting piece 43 after being compressed.Whereby, in this pipe, flexible member 46 is borrowed pushing of this push rod group 4 at this keeper 21 and removes the airtight fixing positioning relation with this needle stand 22, and this this needle stand 22 of connecting piece 43 inlay card and remove with the airtight snap-fit relationship of this tube wall 42 after, the elastic-restoring force of flexible member 46 in this pipe can be borrowed to push this connecting piece 43 and to be moved to this needle body 23 together with this needle stand 22 and to be hidden in the tube chamber 41 of this push rod group 4.
Consult Figure 15, Figure 16 and Figure 17, be the present invention's the 4th embodiment, it is roughly the same with this first embodiment, difference be in:
Flexible member 47 in the pipe that this push rod group 4 also includes a contraction type.In this pipe, flexible member 47 is contained in after tension in the tube wall 42 of this push rod group 4 and is also fixed between this rear open end 422 and this connecting piece 43.Whereby, in this pipe, flexible member 47 borrows the airtight fixing positioning relation pushing releasing and this needle stand 22 of this push rod group 4 at this keeper 21, and this this needle stand 22 of connecting piece 43 inlay card and remove with the airtight snap-fit relationship of this tube wall 42 after, the elastic-restoring force of elastic element 47 in this pipe can be borrowed to draw this connecting piece 43 and to be moved to this needle body 23 together with this needle stand 22 and to be hidden in the tube chamber 41 of this push rod group 4.
Consult Figure 18, be the present invention's the 5th embodiment, it is roughly the same with this first embodiment, difference be in: the bulge loop 4322 in this connecting piece 43 joint portion 432 is formed in an inner surface of this ring wall 430 this groove 4321 relative.Whereby, with this groove 4321 and this needle stand 22 fit, and can engage with the fastening ring 225 being formed in this needle stand 22 chamber wall 222 1 outer surfaces with this bulge loop 4322 equally, and inlay card is integrated.
Consult Figure 19, Figure 20 and Figure 21, Figure 22, be the present invention's the 6th embodiment, it is roughly the same with this first embodiment, difference be in:
This push rod group 4 also comprises can the airtight plug sleeve 48 be set in this tube chamber 41 with displacement, and passes this end cap 45 and stretch into this tube chamber 41 and can unload the liftoff pull bar 49 linked with this plug sleeve 48.As shown in figure 22, this pull bar 49 is for drawing the direction displacement of this plug sleeve 48 towards this rear open end 422, to to be close to and after being locked to the end cap 45 of this rear open end 422, this end cap 45 is unloaded with the mode part fractureed, and this plug sleeve 48 is located close the rear open end 422 of this tube wall 42, and connecting piece 43 in this tube chamber 41 and between plug sleeve 48 instantaneity create a hermetic closed low pressure space.Make intracavity air pressure in this low pressure space aforementioned lower than atmospheric pressure.
In addition, the fastening ring 225 of this needle stand 22 is formed in this chamber wall 222 1 outer surfaces, the bulge loop 4322 of this push rod group 4 joint portion 432 is formed in an inner surface of this ring wall 430 this groove 4321 relative, this connecting piece 43 is chimeric with the fastening ring 225 of this needle stand 22 with this bulge loop 4322, and this needle stand 22 is integrated with this connecting piece 43 inlay card.
Consult Figure 23, whereby, the airtight fixing positioning relation pushing releasing and this needle stand 22 of this push rod group 4 is borrowed at this keeper 21, and this this needle stand 22 of connecting piece 43 inlay card and remove with the airtight snap-fit relationship of this tube wall 42 after, can the low pressure purt suction effect in this tube chamber 41 be borrowed and draw this connecting piece 43 and to be moved to this needle body 23 together with this needle stand 22 and to be hidden in the tube chamber 41 of this push rod group 4.
Consult figure Figure 24, Figure 25 and Figure 26, be the present invention's the 7th embodiment, it is roughly the same with this first embodiment, difference be in:
This push rod group 4 also comprises can the airtight plug sleeve 48 be set in this tube chamber 41 with displacement, and passes this end cap 45 and stretch into this tube chamber 41 and can unload the liftoff pull bar 49 linked with this plug sleeve 48.As shown in figure 22, this pull bar 49 is for drawing the direction displacement of this plug sleeve 48 towards this rear open end 422, to to be close to and after being locked to the end cap 45 of this rear open end 422, this end cap 45 is unloaded with the mode part fractureed, and this plug sleeve 48 is located close the rear open end 422 of this tube wall 42, and connecting piece 43 in this tube chamber 41 and between plug sleeve 48 instantaneity create a hermetic closed low pressure space.
The joint portion 432 of this push rod group 4 is a cylinder at the present embodiment, and this bulge loop 4322 is sequentially formed in this cylinder outer surface respectively with this groove 4321.
This external member group 5 also comprises an airtight barrier flaps 53, and a locating part 54.This airtight barrier flaps 53 is for closing the QI KOU 13 of this syringe 1.This locating part 54 has a collar 541, and link with this collar 541 and one that can perturb pull sheet 542.This collar 541 is nested with in this syringe 1 Large Diameter Pipeline section 123 and the arrival end 121 of this surrounding wall 12 contiguous.This is pulled sheet 542 and is fastening a primary importance (as Figure 26) between this collar 541 and this push rod group 4 end cap 45, and perturbs between the second position (as Figure 24) departing from this push rod group 4.
Whereby, when needing the puncture of detection property in operating, only need puncture into sick body in this needle body 23 cutting tip 231 and after closing this cutting tip 231, the QI KOU 13 of this syringe 1 is closed with this airtight barrier flaps 53, this push rod group 4 of pull is towards the direction displacement of this rear open end 422 again, just can form a low pressure space in this duct 11, and pull this and pull that sheet 542 is positioned at this primary importance (as Figure 26) and block locates this push rod group 4, and maintain the low pressure state in this duct 11.
Now, medical personnel can easily to be hold by one hand, operate this syringe 1, and utilize needle body 23 cutting tip 231 having entered sick body, and the low pressure purt suction effect in this duct 11, directly carry out the action of detection property puncture, if when this needle body 23 cutting tip 231 correctly punctures into Ink vessel transfusing, low pressure in this duct 11 will produce purt suction effect to endovascular blood, and guide draining blood 6 (as Fig. 6) fast along this this chamber 221 of needle body 23 filling, to being hampered by this ventilative partition 224, the chamber wall 222 making this have an X-rayed is display draining blood 6 fast, then, the airtight barrier flaps 53 can opened on this syringe 1 is removed the low pressure state in this duct 11 and is placed in flexible conduit 32 intravasation of this conduit set 3, simultaneously, this push rod group 4 mobile also removes the block relation that this pulls sheet 542 and this push rod group 4, just can hide this needle stand 22 together with this needle body 23 according to aforementioned normal operation sequence retraction, and complete the operation of intravenous catheter device fast.
What deserves to be explained is, aforementioned airtight barrier flaps 53, and locating part 54 can be applied in aforementioned first ~ six embodiment, when not being limited with the embodiment shown in Figure 24, Figure 25, Figure 26.
According to upper described known, intravenous catheter setting device of the present invention has following advantages and Gong Xiao ︰
One, the present invention is simultaneously with arranging this conduit set 3, taking a sample test draining blood 6, and hide three functions such as this needle body 23, not only can reach the object of this needle body 23 of isolation, and can be not enough or target blood outward appearance is indefinite for blood pressure, need detection property puncture sick body, when carrying out that in vein blood vessel, infusion catheter is arranged, borrow the function synchronously taking a sample test draining blood 6, make medical personnel with in the whether correct intravasation of this conduit 32, and can promote efficiency that clinical treatment uses, convenience and safety by this needle body of correct decision 23 fast.
Two, the present invention can completing after in vein blood vessel, infusion catheter arranges operation, easily this needle body 23 is hidden in the tube chamber 41 of this push rod group 4, make the syringe 1 abandoned can isolate this needle body 23 with this surrounding wall 12 with this push rod group 4 tube wall 42, exempt medical personnel after completing the arranging of this conduit set 3, contact with this needle body 23 because tidying up this pin group 2, cause the danger of needle stick injury, infection, and the convenience and safety disposed after clinical treatment uses can be promoted.
Three, QI KOU 13 is arranged at the design of this syringe 1 surrounding wall 12 by the present invention, except the finger that can grip this syringe 13 implements the action that this QI KOU 13 opens and closes simultaneously, outside convenience during lifting operation, also the closure of this push rod group 4 tube chamber 41 can be maintained, this push rod group 4 is made to coordinate practice, flexible member 46 or the interior flexible member 47 of pipe in pipe are set, or in the tube chamber 41 of this push rod group 4, create low pressure purt inhale space, make retraction hide this needle stand 22 and also there is multifunctionality together with the mechanism of this needle body 23.
Four, in addition, this airtight barrier flaps 53, this locating part 54 can be with the use of, make medical personnel more can not need to point this QI KOU 13 closed, and when operating this push rod group 4, directly carry out that there is the action that low pressure purt inhales the detection puncture of function with one hand, and then significantly promote efficiency, convenience and the success rate bestowed when Ink vessel transfusing infusion tube is arranged.
Only as described above, be only embodiments of the invention, and when not limiting scope of the invention process with this, namely all simple equivalences done according to claims of the present invention and description change and modify, and all still belong to scope of the present invention.
Claims (14)
1. an intravenous catheter setting device, is characterized in that: it comprises:
A syringe, include around an axis and define the surrounding wall in a duct, and be formed in this surrounding wall and be communicated with this duct and an extraneous QI KOU, this surrounding wall has a reverse arrival end and a port of export, and adjoins a Large Diameter Pipeline Duan Yuyi pipe with small pipe diameter section of this arrival end and this port of export respectively;
A pin group, include a keeper of hollow, a needle stand, and a needle body, this keeper can between the surrounding wall of airtight fixing with displacement in this syringe Large Diameter Pipeline sector hole road, this needle stand passes this keeper and is limited between this syringe port of export and this keeper, and have and define around this axis a chamber can breathing freely and a chamber wall of this chamber can be had an X-rayed by this syringe, this needle body and this needle stand conducting consolidation, and there is the cutting tip passing this syringe port of export;
A conduit set, includes and can unload the liftoff catheter block be nested with in this syringe pipe with small pipe diameter section, and is connected with this catheter block and the flexible conduit passed for this needle body cutting tip; And
A push rod group, to be entered in this duct by this syringe arrival end and with this duct around wall energy air tight contact slippingly, and include and define a tube chamber and a tube wall of open end after being formed with a reverse front open end and, a connecting piece, and close an end cap of this rear open end, this connecting piece can unload airtight fixing in this tube chamber, and the front open end of this tube wall contiguous and closed, and push this keeper to remove this keeper and this needle stand with the duct that this tube wall gos deep into this syringe, after airtight fixing relation between this surrounding wall, synchronously make this connecting piece by this needle stand of inlay card under the pressure of the counteracting force of this needle stand, and remove the airtight fixing relation of this connecting piece and this tube wall, make this connecting piece, this needle stand and this needle body are hidden in the tube chamber of this push rod group by a restoring force effect.
2. intravenous catheter setting device according to claim 1, is characterized in that: this QI KOU is formed in this Large Diameter Pipeline segment limit between this keeper and this surrounding wall arrival end.
3. intravenous catheter setting device according to claim 1, is characterized in that: this pin group also has a ventilative partition of concrete dynamic modulus hydrophobic, and this ventilative spacer is in the chamber of this needle stand and one end of this needle stand contiguous this push rod group relatively.
4. intravenous catheter setting device according to claim 1, is characterized in that: the surrounding wall of this syringe also has first stop ring being formed in this Large Diameter Pipeline section inner surface, and this keeper airtightly with displacement can be positioned this first stop ring.
5. intravenous catheter setting device according to claim 4, it is characterized in that: the surrounding wall of this syringe also has and is formed in this Large Diameter Pipeline section and the intersegmental shoulder of pipe with small pipe diameter, the chamber wall of this needle stand is along this Axis Extension and airtightly pass this keeper and be limited between this shoulder and this keeper.
6. intravenous catheter setting device according to claim 1, it is characterized in that: this pin group also includes flexible member in cylinder that a bullet opens formula, this interior flexible member is by between this port of export of being contained in after compressing in this syringe pipe with small pipe diameter section and this needle stand, this interior flexible member borrows the airtight fixing positioning relation pushing releasing and this needle stand of this push rod group at this keeper, and this this needle stand of connecting piece inlay card and remove with the airtight snap-fit relationship of this push rod group tube wall after, elastic-restoring force by means of this interior flexible member pushes this needle stand together with this needle body, this connecting piece be moved to be hidden in this push rod group tube chamber in.
7. intravenous catheter setting device according to claim 1, it is characterized in that: this push rod group also includes flexible member in pipe that a bullet opens formula, in this pipe, flexible member is contained in after compressing in the tube wall of this push rod group contiguous between this front open end and this connecting piece, in this pipe, flexible member borrows the airtight fixing positioning relation pushing releasing and this needle stand of this push rod group at this keeper, and this this needle stand of connecting piece inlay card and remove with the airtight snap-fit relationship of this push rod group tube wall after, by means of the elastic-restoring force of flexible member in this pipe push this connecting piece to be moved to together with this needle stand and this needle body be hidden in this push rod group tube chamber in.
8. intravenous catheter setting device according to claim 1, it is characterized in that: flexible member in the pipe that this push rod group also comprises a contraction type, in this pipe, flexible member is contained in after tension in the tube wall of this push rod group and is also fixed between this rear open end and this connecting piece, in this pipe, flexible member borrows the airtight fixing positioning relation pushing releasing and this needle stand of this push rod group at this keeper, and this this needle stand of connecting piece inlay card and remove with the airtight snap-fit relationship of this push rod group tube wall after, by means of the elastic-restoring force of flexible member in this pipe draw this connecting piece to be moved to together with this needle stand and this needle body be hidden in this push rod group tube chamber in.
9. intravenous catheter setting device according to claim 1, is characterized in that: be more formed with a hermetic closed low pressure space in the tube chamber of this push rod group, the intracavity air pressure in this low pressure space is lower than atmospheric pressure.
10. intravenous catheter setting device according to claim 9, it is characterized in that: this push rod group also comprises and airtightly with displacement can be set in this intraluminal plug sleeve, and pass this end cap and to stretch in this tube chamber and the liftoff pull bar linked with this plug sleeve can be unloaded, this pull bar is for drawing the direction displacement of this plug sleeve towards this rear open end, to this rear open end contiguous and the end cap rear section being locked to this rear open end unloads this end cap, this plug sleeve is located and creates this intraluminal low pressure space aforementioned to open end and instantaneity after closing this tube wall.
11. intravenous catheter setting devices according to claim 1, it is characterized in that: also include an external member group, this external member group comprises a front protecting cover, and an airtight barrier flaps, this front protecting cover is nested with the Large Diameter Pipeline section at this syringe this port of export contiguous, and the cutting tip of this needle body coated and this conduit set, and close this syringe port of export, this airtight barrier flaps is used for the QI KOU closing this syringe, when making this push rod group be in reverse to the direction displacement of this port of export, between this pin group in this duct and this push rod group, form a low pressure space.
12. intravenous catheter setting devices according to claim 11, it is characterized in that: this external member group also has a locating part, this locating part has a collar, and to link with this collar and one that can perturb pull sheet, this collar is nested with in this syringe Large Diameter Pipeline section and the arrival end of this surrounding wall contiguous, this is pulled sheet and is fastening a primary importance in this collar and this push rod group, and perturb between the second position departing from this push rod group, this push rod group is fixed after createing the low pressure space in this duct and be limited to primary importance pull sheet, maintain the low pressure space in this duct.
13. intravenous catheter setting devices according to claim 1, it is characterized in that: this connecting piece have around this axis a ring wall, be formed in this ring wall and the joint portion linked with this needle stand, and intercept a barrier bodies between this ring wall, this joint portion can be with the groove of this needle stand chamber wall fit, the bulge loop that engages with this needle stand chamber wall one of them plant.
14. intravenous catheter setting devices according to claim 13, it is characterized in that: the tube wall of this push rod group also have a minor diameter part of this front open end adjacent, this minor diameter part adjacent a large-diameter portion, be formed in a terrace edge between this large and small footpath portion, and be formed in this tube wall large-diameter portion inner surface and second stop ring of this terrace edge contiguous, this connecting piece also has the outer snap ring being formed in this ring wall outer surface, this outer snap ring is airtight is fastened in this second stop ring, make that this connecting piece is airtight to be positioned in this tube wall, and close this tube wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410552438.0A CN105561434B (en) | 2014-10-17 | 2014-10-17 | Intravenous catheter setting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410552438.0A CN105561434B (en) | 2014-10-17 | 2014-10-17 | Intravenous catheter setting device |
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| Publication Number | Publication Date |
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| CN105561434A true CN105561434A (en) | 2016-05-11 |
| CN105561434B CN105561434B (en) | 2019-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410552438.0A Active CN105561434B (en) | 2014-10-17 | 2014-10-17 | Intravenous catheter setting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018209498A1 (en) * | 2017-05-15 | 2018-11-22 | 福建省百仕韦医用高分子股份有限公司 | Safe and open indwelling needle provided with forwards-extending needle bar |
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| CN102512722A (en) * | 2005-09-19 | 2012-06-27 | 许明正 | Intravenous catheter setter capable of drawing and detecting backflow blood |
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| US6186980B1 (en) * | 1999-10-07 | 2001-02-13 | Sanofi-Synthelabo | Single-use device for injection |
| CN1421248A (en) * | 2001-11-28 | 2003-06-04 | 萨克哈拉姆D.马赫卡 | Disposible safety syringe with improved retractable needle |
| CN102512722A (en) * | 2005-09-19 | 2012-06-27 | 许明正 | Intravenous catheter setter capable of drawing and detecting backflow blood |
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| Publication number | Publication date |
|---|---|
| CN105561434B (en) | 2019-03-08 |
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