CN100569305C - Guiding device of intravenous injection conduit - Google Patents

Abstract

The invention discloses a kind of guiding device of intravenous injection conduit, include a hollow socket, place in this socket and can be along a needle stand of an axis direction displacement, be combine with this needle stand and extend forward to pass this socket and form a needle body of user mode, the detachable liftoff conduit tube component that passes forward at this socket one tubule footpath Duan Yiduan and this needle body of confession that is nested with.One unloads part has a prelocalization hole that is formed on this socket one big caliber section, a protruding bolt that radially extends and can cooperate with this prelocalization hole, and can control one group of control that this protruding bolt breaks away from this prelocalization hole, make this needle stand can drive this needle body and move to along this axis direction and be hidden in this socket.

Description

Guiding device of intravenous injection conduit

Technical field

The present invention relates to a kind of guiding device, but particularly relate to the guiding device of intravenous injection conduit of a kind of pumpback and hiding needle body.

Background technology

Ginseng Fig. 1, Fig. 2, as United States Patent (USP) the 5th, 989, the intravenous injector shown in No. 220 cases consists predominantly of a body 10 of replying part 11 around.This answer part 11 has a fixed needle body 12 and passes a leading section 111 of this body 10, and being embedded in a rearward end 112 of this body 10, this leading section 111 has the relative frictional resistance that is formed with respectively with a base 13 and plays tension force and prevent this base 13 interface 111I, 131 of displacement backward to overcome this answer part 11.One spring 15 is to be the compression shape and to be resisted against these body 10 1 front bulkheads 101 and 113 of this answer part 11 1 terrace edges.During use, the needle body 12 that this extension passes a flexible curved conductor 14 is to insert in the patient's blood vessel, to guide delivery of medicaments or transfusion in these conduit 14 intravasations.

When this base 13 forces by this answer part 11 leading sections 111 separatedly, and when unloading this interface 111I, this answer part 11 can be subjected to these spring 15 pushing and withstanding at once and automatically drive these needle body 12 pumpbacks to this body 10.But, unload in the process of this answer part 11 and this needle body 12 and easily vibrate when medical personnel operate this base 13 with the hands application of force, and make needle body 12 penetrate the accident of blood vessel, and make patient's feels pain, and the doubt of safety is arranged in the use.

Summary of the invention

The object of the present invention is to provide a kind of can be with the singlehanded ease of Use and the guiding device of intravenous injection conduit of pumpback one needle body safely.

The invention is characterized in: this guiding device of intravenous injection conduit comprises a socket, a needle body, a needle stand, and unloads part, a catheter block and a conduit.This socket has along an axis direction corresponding mutually a preceding open end and open end, a back, an and tube wall of this forward and backward open end of connection, this tube wall have along this axis direction mutually corresponding and be respectively adjacent to this forward and backward open end the big caliber section of tubule footpath Duan Yuyi, define an inner surface of a pipeline around this axis and with this forward and backward open end, and be in reverse to an outer surface of this inner surface.This needle body has a leading portion that ends at a front end, and extends and be in reverse to a rear end of this front end along this axis direction.This needle stand has a leading section and a rearward end of extending along this axis direction, this rearward end is to be contained in this socket pipeline, and can slide into contiguous this preceding open end and this open end, back respectively along this axis direction with respect to this socket tube wall, this leading section is to be connected with this needle rear end, when this needle stand is when being positioned at this socket anterior position, this needle body leading portion is to pass preceding open end of this socket and extension forward, and be in user mode, when this needle stand is when being positioned at this socket rear position, this needle body is in pumpback and the pipeline that is hidden in this socket, and be in the recovery state, and this rearward end is around this axis and defines a room with this needle body conducting.This unloads part is can be when this needle stand rearward end is positioned at anterior position, and this needle stand is along this axis direction displacement relatively, and has a prelocalization hole, a protruding bolt and one group of control.The inside and outside surface of this tube wall is run through in this prelocalization hole by the big caliber section of this socket.This protruding bolt be can fix the location this needle stand rearward end, and via this prelocalization aperture to passing the big caliber section of this socket.This group control be configured in this socket outer and with this protruding knot that ties, and can make this needle stand be moved to the rear position by this prelocalization hole by displacement along this axis direction.This catheter block has can be along this axis direction displacement to unload this needle stand leading section and to define a ring wall of a feed track, an end that is in reverse to this ring wall and stretches along the axis direction edge, reach a perforation of extending and be communicated with this feed track along this axis direction, this needle body leading portion is passed by this perforation.This conduit has and places into extending to an adjacent segments that is communicated with this feed track in the perforation of this catheter block and along this axis direction, reach a front end rigion that extends and pass this catheter block end by this adjacent segments along this axis direction, when this needle body is positioned in user mode, this conduit is that ring covers this needle body leading portion, and makes this needle body front end pass this catheter proximal end section forward.

Description of drawings

The present invention is described in detail below in conjunction with drawings and Examples.

Fig. 1 is a cutaway view, and the user mode of general intravenous injector is described;

Fig. 2 is a cutaway view, and general intravenous injector pumpback one needle body is described;

Fig. 3 is an exploded view, and first preferred embodiment of the present invention's one guiding device of intravenous injection conduit is described;

Fig. 4 is a cutaway view, and the user mode of this first preferred embodiment is described;

Fig. 5 is a cutaway view, and this first preferred embodiment pumpback, one needle body is described;

Fig. 6 is a cutaway view, and second preferred embodiment of the present invention's one guiding device of intravenous injection conduit is described;

Fig. 7 is a cutaway view, and this second preferred embodiment pumpback, one needle body is described;

Fig. 8 is a cutaway view, and the 3rd preferred embodiment of the present invention's one guiding device of intravenous injection conduit is described;

Fig. 9 is a side view, and the 3rd preferred embodiment pumpback one needle body is described;

Figure 10 is a cutaway view, and the 4th preferred embodiment of the present invention's one guiding device of intravenous injection conduit is described;

Figure 11 is a cutaway view, and the 4th preferred embodiment pumpback one needle body is described;

Figure 12 is an exploded view, and the 5th preferred embodiment of the present invention's one guiding device of intravenous injection conduit is described;

Figure 13 is a cutaway view, and the 6th preferred embodiment of the present invention's one guiding device of intravenous injection conduit is described.

The specific embodiment

Before the present invention is described in detail, be noted that in the following description similar elements is to represent with identical numbering.

Ginseng Fig. 3, Fig. 4, first preferred embodiment of guiding device of intravenous injection conduit of the present invention comprises a socket 2, a needle stand 3, a needle body 5, reaches a conduit tube component 4.

This socket 2 has along an axis direction corresponding mutually a preceding open end 224 and open end 223, a back, and connects a tube wall 22 of this forward and backward open end 224,223.This tube wall 22 have along this axis direction mutually corresponding and be respectively adjacent to forward and backward open end 224,223 tubule footpath section 228 and one big caliber section 229, define an inner surface 221 of a pipeline 21 around this axis and with this forward and backward open end 224,223, and be in reverse to an outer surface 222 of this inner surface 221.

One unloads part includes and runs through this tube wall 22 inside and outside surperficial 221,222 and the guide channel 23 that extends along axis direction of this big caliber section 229 relatively, this guide channel 23 is to originate in a prelocalization hole 231 and end at a back locating hole 232, and has two pinch portions 24,25 of this forward and backward locating hole 231,232 of adjacency respectively.

This needle body 5 has a leading portion 51 that ends at a front end 52, and extends and be in reverse to a rear end 53 of this front end 52 along this axis direction.

This needle stand 3 is to be placed in this pipeline 21 by open end 223, this socket 2 back, and with this open end 223, back of an end cap 26 sealings, and can with respect to this tube wall 22 along this axis direction contiguous this preceding open end 224 and after 223 slips in open end.This needle stand 3 has and the fixed leading section 31 in this needle body 5 rear ends 53.Ginseng Fig. 4, when this needle stand 3 is when being positioned at these socket 2 anterior position, these needle body 5 leading portions 51 are to pass these socket 2 preceding open ends 224 and extend forward, and are in user mode.Ginseng Fig. 5 is when this needle stand 3 is that this needle body 5 is in pumpback and the pipeline 21 that is hidden in this socket 2, and is in the recovery state when being positioned at these socket 2 rear positions.

This needle stand 3 also has by this leading section 31 and extends and be contained in this socket 2 pipelines 21 rearward end 32 with respect to bassoon footpath section 229 along this axis direction.This rearward end 32 is around this axis and defines a room 36 with 5 conductings of this needle body.More than one air-permeable member 37 is a kind of mushy materials, and is fastened on this rearward end 32 to seal this room 36, can be for the speed of circulation of air and inhibition blood circulation.In addition, this needle stand 3 has an apparent blood form 38 that connects this leading section 31 and this rearward end 32, and this apparent blood form 38 is to be communicated with this needle body 5 and this room 36, and the situation that can observe blood circulation.

This unloads part and has the protruding bolt 33 that can be controlled and radially be passed these socket 2 outer surfaces 222 by this rearward end 32.When this needle stand 3 during by this socket 2 anterior position position slippage rearward, this protruding bolt 33 is to slide onto back locating hole 232 from this prelocalization hole 231 along this guide channel 23 slidably, whereby, the protruding bolt 33 that this is positioned at 32 of big caliber section 229 and this rearward end is to engage the location with this prelocalization hole 231 or back locating hole 232.

When this needle stand 3 with respect to this socket 2 along this axis direction displacement, when being respectively adjacent to anterior position or rear position, the projection 33 of this needle stand 3 is to be limited by a wherein pinch portion 24,25, at this moment, as long as force this protruding bolt 33 by this pinch portion 24 or pinch portion 25, this protruding bolt 33 just can be gone into this corresponding prelocalization hole 231 or back locating hole 232 by inlay card, so as to this needle stand 3 is positioned at anterior position or rear position.

This big caliber section 229 also has by this back locating hole 232 and extends to this open end, back 223 and be communicated with a crack ditch 27 of this guide channel 23, makes this protruding bolt 33 force pinch portion 25 by the rear by this crack ditch 27, and slides against swimmingly in this guide channel 23.And this end cap 26 is sealing this open end, back 223 and this crack ditch 27, can locate this open end, back 223, and this big caliber section 229 is remained stationary and indeformable.

One group of control 34 is formed in the end that this protruding bolt 33 can be touched and stir, and docile slippage is in these socket 2 outer surfaces 222, whereby, this protruding bolt 33 can be unloaded by this prelocalization hole 231, makes this needle stand 3 be moved to the rear position according to this guide channel 23 of Xun along this axis direction.

One conduit tube component 4 has a catheter block 41, a conduit 43, and a needle guard 45.

This catheter block 41 has along this axis direction and extends and a ring wall 411 of the feed track 412 that defines, and this ring wall 411 extends and define an end 413 of a perforation 414 along this axis direction relatively.This ring wall 411 is and these socket 2 tubules footpath section 228 sockets, these needle body 5 leading portions 51 is passed by this perforation 414.

This conduit 43 has and places into extending to an adjacent segments 431 that is communicated with this feed track 412 in this perforation 414 and along this axis direction, reach a front end rigion 432 that extends and pass these catheter block 41 ends 413 by this adjacent segments 431 along this axis direction, when this needle body 5 is positioned in user mode, this conduit 43 is that ring covers this needle body 5 leading portions 51, makes these needle body 5 front ends 52 pass this conduit 43 front end rigions 432 forward.

During use, this needle guard 45 of first removal, and puncture into the patient's vein blood vessel with these needle body 5 front ends 52, and guide this conduit 43 and enter in the vein blood vessel.At this moment, flow to blood in this needle stand 3 rooms 36 and can show and be shown in this apparent blood form 38, confirm whether suitable puncturing in the vein blood vessel of this needle body 5 for medical personnel.Ginseng Fig. 5, then, medical personnel can oppress this vein blood vessel this catheter block 41 of fixing simultaneously on the other hand, and another hands grips the tube wall 22 of this socket 2, and the application of force unloads this catheter block 41 with this socket 2.Simultaneously, stir this group control 34 with a finger that grips this tube wall 22, make this protruding bolt 33 drive this needle stand 3 and be moved to the rear position along this guide channel 23, and by this preceding open end 224 with these needle body 5 leading portions 51 pumpbacks to being hidden in this socket 2, and be positioned at the position of recovery state, reach the requirement of safety in utilization, then, the infusion casing for pipelines is connected on this catheter block 41, carry out the infusion treatment, also can before the socket transfer line, connect this catheter block 41 with the blood drawing jacket casing earlier, extract blood for Clinical detection.

Because when using, medical personnel can grip this socket 2 with a hands, and with this group of finger manipulation control 34, make this needle stand 3 drive these needle bodies 5 and rearward move to and be hidden in these socket 2 pipelines 21 in the position.So medical personnel can reach the purpose of isolating immediately after this needle body 5 detaches patient's blood vessel, hiding this needle body 5 in the mode of one-handed performance, exempt the danger that the operator is injured, infect.

Ginseng Fig. 6, Fig. 7 are the present invention's second preferred embodiments, and itself and first preferred embodiment are roughly the same, difference be in:

This socket 2 also has several pieces fins 227 that are formed on this inner surface 221 and contiguous this big caliber section 229 and this tubule footpath section 228.This needle stand 3 also have be formed on this rearward end 32 and towards this fin 227 with define a flexible member accommodation space one the ring edge 323.And this protruding bolt 33 is radially to pass this socket 2 by the position that this rearward end 32 is close to these ring edge 323.

This unloads part prelocalization hole 231 is to be extended laterally along this tube wall 22 by this guide channel 23 1 front end 231I to form a location division 231II, and this pinch portion 24 is formed between this guide channel 23 front end 231I and this location division 231II.This protruding bolt 33 is fastened at this location division 231II, this needle stand 3 is positioned at this socket 2 anterior position.This spring 7 is to be compressive state to be arranged on aforementioned accommodation space, and have respectively against two tops of this fin 227 with this ring edge 323, make this needle body 5 can be by elastic-restoring force, driving at this group control 34 should be protruding during bolt 33 disengaging this location division 231II, is moved to along this guide channel 23 by this front end 231I to be hidden in these socket 2 pipelines 21.

Ginseng Fig. 8, Fig. 9 are the present invention's the 3rd preferred embodiments, and itself and first preferred embodiment are roughly the same, difference be in:

This unloads part and also has the two prelocalization holes 231 that are formed on this big caliber section 229, and this group control is two buckles 6 with the lever principle action, each buckle 6 is to be hubbed on this socket 2 outer surfaces 222 with a fulcrum 63, and have and form one of a protruding bolt 33 and urge end 61, and this fulcrum 63 is in reverse to the drive end 62 that this urges end 61 relatively, make this protruding bolt 33 can radially break away from the pipeline 21 of this socket 2, and discharge this needle stand 3.

This flexible member is a spring 7 and is arranged on aforementioned accommodation space, and has respectively against two tops of this fin 227 with this ring edge 323.When this needle stand 3 is when being positioned at anterior position, this spring 7 is to be compressive state, and accumulate an elastic-restoring force is arranged, when medical personnel press this drive end 62 with finger simultaneously, when making described protruding bolt 33 radially break away from these socket 2 pipelines 21 swimmingly, this needle stand 3 can be passed by elastic-restoring force backward, and it is hiding to the position of reclaiming state to drive this needle body 5.Whereby, can prevent that this needle body 5 from having the situation of vibrations in the process that reclaims, to help to alleviate patient's pain.

What deserves to be mentioned is that though present embodiment comprises two buckles 6, only, single buckle 6 equally also can reach aforementioned location and discharge the function of this needle stand 3.

Ginseng Figure 10, Figure 11 are the present invention's the 4th preferred embodiments, and itself and second preferred embodiment are roughly the same, difference be in:

These needle stand 3 rearward end 32 and this socket 2 are formed with a ring edge 39 that radially extends respectively with respect to the inner surface 221 of this big caliber section 229, reach a back ring edge 220 that extends along axis direction, it is to define a spatial accommodation with this rearward end 32 that edge 220 is encircled in this ring edge 39, back.

One spring 7 is to be contained in aforementioned spatial accommodation, and has a front end and a rear end of encircling edge 220 fixings respectively with this ring edge 39 and this back.Whereby, when this needle stand 3 was positioned at anterior position, this spring 7 was by these needle stand 3 tensions, made this needle body 5 can be by elastic-restoring force after being used to complete, driving at this group control 34 should be protruding during bolt 33 disengaging this location division 231II, by front end 231I along these guide channel 23 displacements.

Ginseng Figure 12 is the present invention's the 5th preferred embodiment, and itself and aforementioned each preferred embodiment are roughly the same, difference be in:

This socket 2 tubules footpath section 228 is formed with a preceding open end 224 that enlarges, and these needle stand 3 leading sections 31 are to be the state that can unload with rearward end 32.Specifically, this needle stand 3 also has by this rearward end 32 and extends forward and define an axial passage 351 a junction 35 to be communicated with this room 36 along this axis direction, and is extended back and form a fit portion 30 of an engagement piece 44 along this axis direction by this leading section that can unload 31.This fit portion 30 be preceding open end 224 by this socket 2 along this axis direction and this connecting portion 35 fits, be interconnected with room 36 for this needle body 5.Whereby, when this conduit tube component 4 makes up with this engagement piece 44, can cooperate the function unit 40 of a kind of detachable intravenous injection conduit of these needle body 5 formation, to cooperate the conduit that uses different tube diameters clinically.

Ginseng Figure 13 is the present invention's the 6th preferred embodiment, and itself and the 4th, the 5th preferred embodiment are roughly the same, difference be in:

These needle stand 3 rearward end 32 also have respectively around this axis and an opposed facing internal ring rib 324,261 with this end cap 26.

This spring 7 also has the front end that is fixed on these needle stand 3 rearward end 3 internal ring ribs 324, and is fixed on a rear end of these end cap 26 internal ring ribs 261.Whereby, when this needle stand 3 was positioned at anterior position, this spring 7 can be hidden to the recovery state this needle body 5 by elastic-restoring force by these needle stand 3 tensions after being used to complete.

Claims (14)

1. guiding device of intravenous injection conduit comprises:

One socket, have along an axis direction corresponding mutually a preceding open end and open end, a back, an and tube wall of this forward and backward open end of connection, this tube wall have along this axis direction mutually corresponding and be respectively adjacent to this forward and backward open end the big caliber section of tubule footpath Duan Yuyi, define an inner surface of a pipeline around this axis and with this forward and backward open end, and be in reverse to an outer surface of this inner surface;

One needle body has a leading portion that ends at a front end, and extends and be in reverse to a rear end of this front end along this axis direction;

One needle stand, have along this axis direction and extend and be set in a leading section and a rearward end in this socket tubule footpath section and this big caliber section respectively, an and apparent blood form of this leading section of connection and this rearward end, this rearward end can slide into contiguous this preceding open end and this open end, back respectively along this axis direction with respect to this socket tube wall, this leading section is to be connected with this needle rear end, when this needle stand is when being positioned at this socket anterior position, this needle body leading portion is to pass preceding open end of this socket and extension forward, and be in user mode, when this needle stand is when being positioned at this socket rear position, this needle body is in pumpback and the pipeline that is hidden in this socket, and be in the recovery state, and this rearward end is around this axis and defines a room with this needle body conducting;

One unloads part, is can be when this needle stand rearward end is positioned at anterior position, and this needle stand is along this axis direction displacement relatively, and has,

The inside and outside surface of this tube wall is run through in one prelocalization hole by the big caliber section of this socket;

One protruding bolt, be can fix the location this needle stand rearward end, and via this prelocalization aperture to passing the big caliber section of this socket;

One group of control, be configured in this socket outer and with this protruding knot that ties, and can make this needle stand be moved to the rear position by this prelocalization hole by displacement along this axis direction;

One catheter block, having can be along this axis direction displacement to unload this needle stand leading section and to define a ring wall of a feed track, an end that is in reverse to this ring wall and stretches along the axis direction edge, reach a perforation of extending and be communicated with this feed track along this axis direction, this needle body leading portion is passed by this perforation;

One conduit, have and place into extending to an adjacent segments that is communicated with this feed track in this catheter block perforation and along this axis direction, reach a front end rigion that extends and pass this catheter block end by this adjacent segments along this axis direction, when this needle body is positioned in user mode, this conduit is that ring covers this needle body leading portion, and makes this needle body front end pass this catheter proximal end section forward.

2. guiding device of intravenous injection conduit as claimed in claim 1 is characterized in that: this needle stand also has at least one this rearward end that is fastened on to seal the air-permeable member of this room.

3. guiding device of intravenous injection conduit as claimed in claim 2 is characterized in that: this air-permeable member is a kind of mushy material.

4. guiding device of intravenous injection conduit as claimed in claim 1, it is characterized in that: this big caliber section is formed with along this axis direction extension and runs through in this tube wall, one guide channel of outer surface, this guide channel is to originate in this prelocalization hole, and locating hole after ending at, this protruding bolt is radially to pass this socket outer surface by this needle stand rearward end, when this needle stand rearward end slides onto the rear position by anterior position, this protruding bolt is to slide onto this back locating hole along this guide channel from this prelocalization hole, and this group control is formed in the end that this protruding bolt can be touched and stir, and docile slippage is at this socket outer surface.

5. guiding device of intravenous injection conduit as claimed in claim 4 is characterized in that: this big caliber section also has a crack ditch that is extended to this open end, back by locating hole behind this guide channel.

6. guiding device of intravenous injection conduit as claimed in claim 4, it is characterized in that: this guide channel has respectively two pinch portions in abutting connection with this prelocalization hole and this back locating hole, when this protruding bolt forces by a pinch portion wherein, this protruding bolt be inlay card go into this corresponding prelocalization hole and back locating hole one of them, make this needle stand be positioned at anterior position and rear position one of them.

7. guiding device of intravenous injection conduit as claimed in claim 1, it is characterized in that: this big caliber section is formed with a guide channel that extends and run through this inside and outside surface of tube wall along this axis direction, this guide channel is to originate in this prelocalization hole, and this prelocalization hole is to be extended laterally by this this tube wall of guide channel one front end edge to form a location division, this protruding bolt is fastened in this location division, this needle stand is positioned at this socket anterior position, and this group control is to drive the location division that this protruding bolt breaks away from this prelocalization hole, makes this protruding bolt by this this guide channel displacement of prelocalization hole front end edge.

8. guiding device of intravenous injection conduit as claimed in claim 7 also has a flexible member that is contained between this needle stand rearward end and this socket inner surface of tube wall.

9. guiding device of intravenous injection conduit as claimed in claim 8, it is characterized in that: this socket also has several pieces fins that are formed on this inner surface and contiguous this big caliber section and this tubule footpath section, and this needle stand also have be formed on this rearward end and towards described fin with define an accommodation space one the ring edge, this flexible member is arranged on aforementioned accommodation space, and have two tops that are resisted against described fin and this ring edge respectively, when this needle stand was positioned at this socket anterior position, this flexible member was to be compressive state.

10. guiding device of intravenous injection conduit as claimed in claim 8, it is characterized in that: this needle stand rearward end and this socket are formed with a ring edge that radially extends respectively with respect to the inner surface of this big caliber section, reach a back ring edge that extends along axis direction, this ring edge, back ring edge are to define a spatial accommodation with this rearward end, this flexible member is to be contained in the aforementioned spatial accommodation, and have a front end and a rear end of encircling the edge fixing respectively with this ring edge and this back, when this needle stand is positioned this socket anterior position this flexible member of tension.

11. guiding device of intravenous injection conduit as claimed in claim 8, also has more than one buckle, this buckle is to be hubbed on this socket outer surface with a fulcrum, and have and form one of this protruding bolt and urge end, and this fulcrum is in reverse to the drive end that this urges end relatively, make this protruding bolt can radially break away from the pipeline of this socket, and discharge this needle stand, this flexible member is to be contained between this needle stand rearward end and this socket inner surface of tube wall.

12. guiding device of intravenous injection conduit as claimed in claim 1 is characterized in that: this needle stand leading section is to be set in this socket tubule footpath section, and the ring wall of this catheter block is to be nested with on this socket tubule footpath section.

13. guiding device of intravenous injection conduit as claimed in claim 1, it is characterized in that: this needle stand leading section and rearward end are to be the state that can unload, this needle stand also has by this rearward end and extends forward and define axial passage a junction to be communicated with this room along this axis direction, and by this leading section along a fit portion that this axis direction extends back, this fit portion is preceding open end and this connecting portion cover connection that is enlarged by this socket, this needle body and this room are interconnected, and the ring wall of this catheter block is and this needle stand leading section fit.

14. guiding device of intravenous injection conduit as claimed in claim 13, it is characterized in that: this conduit is during together with the combination of this catheter block and this fit portion, can cooperate this needle body to form a kind of function unit of detachable intravenous injection conduit, to cooperate the conduit that uses different tube diameters clinically.

Images