CN1520890A

CN1520890A - Safe apparatus with injection and hemospasia function

Info

Publication number: CN1520890A
Application number: CNA031026567A
Authority: CN
Inventors: 许明正; 黄明敏; 许沛扬
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-02-13
Filing date: 2003-02-13
Publication date: 2004-08-18
Anticipated expiration: 2023-02-13
Also published as: CN101327350A; CN100430019C; CN101327350B

Abstract

The present invention is proposed to provide one kind of safe injection and hemospasia utensil with simple operation and no blood contamination. The injection and hemospasia utensil includes cylinder, needle assembly fixed to one end of the cylinder, push rod sliding inside the cylinder, connecting part sliding in one end of the cylinder and duct connected to the connecting part. The connecting part includes one connecting seat with the first branch channel penetrating the flow channel axially and extending radially to connect the flow channel; and the duct fixed to the connecting seat is one hollow tube and may be retained inside blood vessel for injecting to and drawing out blood from blood vessel.

Description

Safe apparatus with injection and blood drawing function

Technical field

The invention belongs to apparatus parts in medium input and the extraction body, particularly a kind of safe apparatus with injection and blood drawing function.

Background technology

During general intravenous injection, main system is by as shown in Figure 1 intravenous injector 1 utensil as input medicament or blood drawing.

Intravenous injector 1 comprise hollow form needle stand 11, hollow needle body 12, hollow linking part 13 and with to be connected part 13 affixed and be the conduit 14 that the hollow flexible is bent.

Needle stand 11 with an end 111 and needle body 12 affixed and with is connected part 13 and overlaps and consolidate, needle body 12 is passed by conduit 14.Whereby, medical personnel puncture into needle body 12 in the blood vessel of animal body, just can use guiding catheter 14 intravasations, and can after needle body 12 is extracted out conduit 14 be kept somewhere in blood vessel, rely on the curved characteristic of conduit 14 flexibles, avoid animal body that uncomfortable sensation is arranged.

At this moment, be connected the syringe connection that part 13 can supply the carrier pipe of drop or be filled with medicament, carry out intravenous injection; Or the action of drawing blood with the syringe of sky.

Only, though above-mentioned intravenous injector 1 can be used as the utensil of input medicament or blood drawing, when reality is used, still there is following disappearance and needs to be resolved hurrily:

1, after medical personnel extracts needle body 12 out; usually must draw blood or import the action of medicament immediately; therefore; medical personnel usually can be earlier put needle body 12 earlier in the job area of implementing injection operation or in the operation board together with needle stand 11 for convenience, or are plugged in the job area fixedly on the object of needle body 12; as the sick bed edge of bed; to avoid needle body 12 to injure operator or patient accidentally, after treating intravenous injection or blood drawing operation finishing, collect respectively again, handle.Therefore, needle body 12 can't have been avoided exposed situation, so, as long as careless slightly, the situation of stabbing medical personnel will be arranged, even cause pain of injury aids infection, II type hepatitis, III type hepatitis ... danger etc. the fatal infection disease.Though, such as the 5989220th, 6287278, No. 6117108 cases of United States Patent (USP), disclose and can needle body have been pulled back in needle stand by the spring in the needle stand, exempt the injury and the fear of the daily use intravenous injector of medical personnel.But caliber is minimum and needle stand that be generally the plastic rubber ejaculate molding goods will be installed the assembly of metal spring and other cooperations in addition, not only can increase the puzzlement in the assembling, and can increase material, manufacturing, detection cost, increase the fraction defective of product, more can the contaminated chance of assembly significantly be promoted because of loaded down with trivial details assembly program.

2, as shown in Figure 2, behind needle body 12 guiding catheters 14 intravasations, though can be by open-work 121, make blood extravasation to the gap of conduit 14 with needle body 12, reach the function of existing blood, correctly be set in needle body 12 and conduit 14 in the blood vessel, still to advise medical personnel, the technological means of open-work 121 is set on needle body 12 perisporiums 122, makes needle body 12 bendings of taper easily; Moreover as when operation, needle body 12 will lose the function of existing blood when 14 whole sections disappearances of conduit are in subcutaneous tissue or blood vessel, and because needle body 12 suitable tapers, and with conduit 14 applyings.When patient's blood pressure deficiency so that blood when being oozed out by open-work 121, just can't correctly show the state of use.

3, in addition, extract out in by conduit 14 and after conduit 14 was retained in the blood vessel, medical personnel must push and fixing part 13 and the conduit 14 of being connected on the other hand when needle body 12.Therefore, can only carry out the action of affixed linking part 13 and drop or syringe with another hands, thereby the disappearance that exists operation to have some setbacks when especially gathering blood as a corpse or other object for laboratory examination and chemical testing with syringe, more highlights the inconvenience of one-handed performance.And be connected part 13 and syringe and drop pipeline and replace when being connected, easy of careless manipulation causes being connected a little pollution, thus the situation that causes blood to be infected.Moreover, after syringe is obtained blood, must again blood transfer be gone into and preserve censorship in the blood-collecting tube, make the process of intravenous injection and blood collection quite complicated, and the crisis of the vulnerable to pollution of hiding.

Summary of the invention

The purpose of this invention is to provide a kind ofly avoid contaminated blood, use operation simple and easy, have a safe apparatus of injection and blood drawing function smoothly.

Syringe needle group, the Slide Group that the present invention includes syringe, is fixedly arranged on syringe one end is located at syringe and is located at the linking part of syringe one end and the conduit that is connected with the linking part with interior push rod, Slide Group; Being connected part comprises having along axis direction and runs through runner and extend and be communicated with the connecting base of first by-path of runner along the radial line direction; Conduit be fixed in connecting base runner end and can keep somewhere in blood vessel with from connecting base to the hollow tube of intravascular injection/in blood vessel to the blood drawing of first by-path.

Wherein:

The outlet of connecting base first by-path is arranged with the cap with its sealing.

The outlet of connecting base first by-path is connected with by the adapter group that connects blood collector; Blood collector has the ring wall that defines room and is formed with inlet; The adapter group has two ends difference socket connecting base first by-path and connects first of blood collector inlet takes over.

Connecting base has second by-path that radially extends and be communicated with runner; Be provided with resistance joint chair and rubber ring pad between first and second by-path in the connecting base part runner; The resistance joint chair has around axis and defines the ring wall of perforation; Ring wall is formed with the open end that places for the syringe port of export, be placed through resistance in the connecting base part runner connect end and with the pore of the second by-path conducting; The resistance that rubber ring pad system is placed on the resistance joint chair connects between end and the connecting base, and the blocking-up runner, separates first and second by-path; Blood collector is provided with air guide port; The adapter group have two ends respectively socket connecting base first by-path be connected that first between the blood collector inlet taken over and two ends connect the adapter of second between blood collector air guide port and connecting base second by-path respectively.

A kind of have the injection and a safe apparatus of blood drawing function, and syringe needle group and Slide Group that it comprises syringe, be fixedly arranged on syringe one end are located at syringe with interior push rod; Syringe has around axis and defines the tube wall in duct; The duct has small-bore section and large aperture section; Tube wall has the port of export of contiguous small-bore section and the port of export is reverse and the arrival end of contiguous large aperture section; The syringe needle group comprises hollow needle stand and hollow and the needle body affixed with needle stand; Needle stand is removable to be positioned syringe duct small-bore end and outstanding towards the large aperture, so that needle body is passed by the syringe port of export; Push rod system slides and is inserted in the limited propelling movement stroke of syringe large aperture Duan Bingzuo, and it has first and second end face of sealing and is extended to second end face and be the tube chamber of utmost point low pressure state by first end face.

The syringe needle group is arranged with the linking part of an end connecting duct; Being connected part comprises having along axis direction and runs through runner and extend and be communicated with the connecting base of first by-path of runner along the radial line direction; Connecting base is fixed in the syringe port of export with an end cover; Conduit be fixed in connecting base runner end and can keep somewhere in blood vessel with from connecting base to the hollow tube of intravascular injection/in blood vessel to the blood drawing of first by-path.

Connecting base has second by-path that radially extends and be communicated with runner; Be provided with resistance joint chair and rubber ring pad between first and second by-path in the connecting base part runner; The resistance joint chair has around axis and defines the ring wall of perforation; Ring wall is formed with the open end that places for the syringe port of export, be placed through resistance in the connecting base part runner connect end and with the pore of the second by-path conducting; The resistance that rubber ring pad system is placed on the resistance joint chair connects between end and the connecting base, and the blocking-up runner, separates first and second by-path.

Be provided with resistance joint chair and rubber ring pad in the connecting base part runner; The resistance joint chair has around axis and defines the ring wall of perforation; Ring wall is formed with the open end that places for the syringe port of export, the resistance that is placed through in the connecting base part runner connects end and extends also second by-path of communication bores along the radial line direction; The resistance that rubber ring pad system is placed on the resistance joint chair connects between end and the connecting base, and the blocking-up runner, separates first and second by-path.

Syringe small-bore section has the hole wall that forms number Ka Gou; Needle stand has the section of fastening, the number form that fasten in the section of syringe small-bore and is formed in the protruding bolt of the section of fastening side face to engage with syringe small-bore section Ka Gou.

Push rod has the surrounding wall and the bullet seat of the open first end face tube chamber of the formation of defining; Bullet seat system is closed in surrounding wall first end face unloading, its have towards the syringe needle group and form the end face of draw-in groove and number by end face along the draw-in groove wall Ka Gou that extends of shape in the shape of a spiral; Needle stand have extend into large aperture section and the engaging section that engages with bullet seat draw-in groove and number form be formed in the engaging Duan Duan protruding bolt.

The card rib that the syringe tube wall has several neighboring entry ends and is equally spaced in the form of a ring along inner surface; The contiguous second end face outer surface of push rod surrounding wall has several touching with the mutual sandbar of syringe tube wall card rib and screws togather the fin that is the screw-like extension.

Contiguous second end face of push rod surrounding wall has number along the linear guide rail that extends of inner surface.

The hollow needle stand is that transparent material is made, and engaging section of hollow forms the protruding side face of arc of the amplification effect with convex lens on it.

Because the syringe needle group, the Slide Group that the present invention includes syringe, are fixedly arranged on syringe one end are located at syringe and are located at the linking part of syringe one end and the conduit that is connected with the linking part with interior push rod, Slide Group; Being connected part comprises having along axis direction and runs through runner and extend and be communicated with the connecting base of first by-path of runner along the radial line direction; Conduit be fixed in connecting base runner end and can keep somewhere in blood vessel with from connecting base to the hollow tube of intravascular injection/in blood vessel to the blood drawing of first by-path.During use, medical personnel only need to grip syringe with hands, and puncture into by the syringe needle group in the blood vessel of animal body, use in the guiding catheter intravasation, at this moment, if the syringe needle group correctly is set in the blood vessel, under the enough situation of blood pressure, blood can reflux and present the blood phenomenon, to advise medical personnel's syringe needle group and conduit correctly in the intravasation.If meet the weak patient of health, or blood pressure is not enough and automatically during the situation of blood back, medical personnel can be directly back pulling-pushing rod, extract blood to test the whether action of blood back; Then, medical personnel only need make connecting base first by-path and extraneous conducting, and pushing push rod, make push rod slide onto the syringe needle set of contact along syringe, only the turn push rod can form the moving function that attracts gently, and the syringe needle group is kept somewhere in the push rod, whereby, enable to isolate the syringe needle group, exempt medical personnel and be in contact with it, cause danger injured, that infect because tidying up the syringe needle group with push rod.And the assembly that the present invention utilizes special structural design, simplifies not only can reduce the contaminated chance of assembly, and reduces material, assembling, detection cost, and practicality and convenience can promote intravenous injection the time.Not only avoid contaminated blood, and use operation simple and easy, smooth and easy, thereby reach purpose of the present invention.

Description of drawings

Fig. 1, be known intravenous injector decomposition texture schematic isometric.

Fig. 2, be known intravenous injector user mode sketch map (the existing blood state of needle body).

Fig. 3, for decomposition texture schematic isometric of the present invention.

Fig. 4, for structural representation cutaway view of the present invention.

Fig. 5, for user mode sketch map of the present invention (bullet seat and needle stand contact condition).

Fig. 6, for user mode sketch map of the present invention (bullet seat and needle stand fastening state).

Fig. 7, for structural representation cutaway view of the present invention (the bullet seat unloads state by tube chamber).

Fig. 8, for structural representation cutaway view of the present invention (the syringe needle group is accommodated in pusher tube intracavity state).

Fig. 9, be connection tube structural representation cutaway view of the present invention (is connected with conduit collection blood status).

Figure 10, be connection tube structural representation cutaway view of the present invention (is connected with two conduits collection blood status).

Figure 11, for structural representation cutaway view of the present invention (being provided with the resistance joint chair of tool second by-path).

Figure 12, for structural representation axonometric chart of the present invention (having the hour hand tube).

Figure 13, for structural representation cutaway view of the present invention (being provided with needle guard and trocar sheath).

The specific embodiment

As Fig. 3, Fig. 4, shown in Figure 9, the present invention includes syringe 2,, the syringe needle group 3, the Slide Group that are fixedly arranged on syringe 2 one ends be located at syringe 2 with interior push away 4 bars, Slide Group is located at the linking part 5 of syringe 2 one ends and conduit 6, blood collector 7 and the adapter group 8 that is connected with linking part 5.

Syringe 2 has around axis 1X and defines the tube wall 22 in duct 21.Duct 21 has small-bore section 211 and large aperture section 212.Tube wall 22 has the card ditch 226 that the arrival end 224, number neighboring entry end 224 of the port of export 223 of outer surface 221, inner surface 222, contiguous small-bore section 211 and the port of export 223 reverse and contiguous large aperture sections 212 and the card rib 225 that is equally spaced in the form of a ring along inner surface 222 and number form are formed in the inner surface 222 and the contiguous port of export 223.

Card ditch 226 is to go into small-bore section 211 by large aperture section 212 ora terminalis with spiral extension.

Syringe needle group 3 comprises hollow and the needle stand 31 made for transparent material and hollow and affixed and passed the needle body 32 of syringe 2 by syringe 2 ports of export 223 with needle stand 31.

The protruding bolt 315 that the hollow engaging section 312 that needle stand 31 has the section of fastening 311 that fastens in syringe 2 small-bore sections 211, extend into large aperture section 212, the protruding bolt 314 that number form is formed in the section of fastening 311 side faces 313 and number form are formed in engaging section 312 ends.

Engaging section 312 forms the protruding side face 316 of arc of the amplification effect with convex lens.

Push rod 4 is to slide to be inserted in syringe 2 large aperture sections 212 and to make limited propelling movement stroke, and it has around axis 1X and defines the surrounding wall 42 and the bullet seat 43 of tube chamber 41.

Contiguous second end face 422 of second end face 422, outer surface 423, inner surface 424, number that surrounding wall 42 has the first open end face 421, a sealing is fin 425 that screw-like extends and contiguous second end face 422 of number and along the inner surface 424 linear guide rails 426 that extend along outer surface 423.

Bullet seat 43 is to be closed in surrounding wall 42 first end faces 421 unloading, and makes tube chamber 41 become utmost point low pressure state.Bullet seat 43 have towards syringe needle group 3 and form the end face 432 of draw-in groove 431 and number by end face 432 along the draw-in groove 431 walls card ditch 433 that extends of shape in the shape of a spiral.

Be connected part 5 and comprise connecting base 51 and cap 52.Connecting base 51 has and syringe 2 ports of export 223 belled rear ends 511, the runner 513 that runs through with the reverse front end 512 in rear end 511, along axis 1X direction and first by-path 514 that extends and be communicated with runner 513 along the radial line direction.

Cap 52 is to be closed in first by-path 514.

Conduit 6 is for being fixed in the curved hollow tube of connecting base 51 front ends 512 flexibles.

As shown in Figure 9, blood collector 7 has the ring wall 72 that defines room 71 and is formed with inlet 73.

Adapter group 8 has two ends difference socket connecting base 51 first by-paths 514 and connects first of blood collector 7 inlets 73 takes over 81.

As shown in Figure 4, during use, medical personnel only need to grip syringe 2 with hands, and puncture into by needle body 32 in the blood vessel of animal body, use in guiding catheter 6 intravasations, at this moment, if needle body 32 correctly is set in the blood vessel, under the enough situation of blood pressure, blood can be refluxed along needle stand 31 by needle body 32, and the amplification effect by the protruding side face 316 of needle stand 31 arcs highlights existing blood phenomenon, to advise medical personnel's needle body 32 and conduit 6 correctly in the intravasation.If meet the weak patient of health, or blood pressure is not enough and automatically during the situation of blood back, medical personnel are back pulling-pushing rod 4 directly, extract blood to test the whether action of blood back, in case the protruding side face of the arc of needle stand 31 316 produces existing blood phenomenon, just represent that needle body 32 and conduit 6 are correctly in the intravasation.

As Fig. 5, shown in Figure 6, then, medical personnel need only unload cap 52, make connecting base 51 first by-paths 514 and extraneous conducting, and pushing push rod 4, push rod 4 is slid onto when contacting with needle stand 31 engaging section 312, again turn push rod 4 about 90 ° gently along syringe 2 large aperture sections 212, make on the push rod 4 screw-shaped fin 425 conflict mutually and screw togather, so that push rod 4 is towards the direction slippage of syringe 2 tube walls, 22 ports of export 223 (arrow I) with syringe 2 cyclic card ribs 225.Whereby, order with can unload be closed in surrounding wall 42 first end faces bullet seat 43 with respect to needle stand 31 turns, the engaging section 312 of needle stand 31 is engaged in draw-in groove 431 with the card ditch 433 of protruding bolt 315 along bullet seat 43, and fix with bullet seat 43 and to be one, thereby make needle stand 31 and the bullet seat 43 can be synchronously by turn.Simultaneously, as shown in Figure 7, when further turn push rod 4, so that needle stand 31 is with respect to 211 turns of syringe 2 small-bore sections, the direction displacement of the protruding bolt 314 of borrowing needle stand 31 sections of fastening 311 along the card ditch 226 of syringe 2 towards large aperture section 212 (arrow II), and then break away from small-bore section 211 and pass bullet seat 43 synchronously, impel bullet seat 43 to tear, and unload push rod 4 first end faces 421 synchronously along surrounding wall 42 inner surfacies 424.At this moment, in the tube chamber 41 that the needle stand 31 and the needle body 32 of bullet seat 43 engaging can enter push rod 4, and bullet seat 43 peripheries can with inner surface 424 airtight contacts of surrounding wall 42, make 41 airtight slidably states of formation of bullet seat 43 and tube chamber.Whereby, as shown in Figure 8, make the attraction function that utmost point low pressure state forms in the push rod 4 be activated, under the situation of external atmospheric pressure greater than tube chamber 41 internal gas pressures, form one by the external world through connecting base 51 first by-paths 514, runner 513, through syringe 2 small-bore sections 211, the air-flow of section 212 channelling in large aperture to push rod 4 tube chambers 41, make syringe needle group 3 and bullet seat 43 by the powerful air-flow pumpback of this burst to the tube chamber 41 of push rod 4, and follow guide rail 426 to march to the position of tube chamber 41 contiguous second end faces 422, make syringe needle group 3 and bullet seat 43 be hampered by guide rail 426, and can be by not dropping out in the tube chamber 41, and in the surrounding wall that is hidden in push rod 4 42 that can be firm.Whereby, syringe needle group 3 is kept somewhere in push rod 4, and push rod 4 then is retained in the large aperture section 212 of syringe 2, and syringe needle group 3 is isolated in push rod 4 and the syringe 2, after avoiding medical personnel to finish intravenous injection, contact with needle body 32 and cause danger injured, that infect because tidy up syringe needle group 3.

In the time of will extracting a spot of blood as a corpse or other object for laboratory examination and chemical testing as if medical personnel, only need with 54 outlets of cap 52 sealing connecting bases 51 first by-paths, and direct pull push rod 4, just blood can be extracted in the syringe 2 through connecting base 51 by conduit 6.

As shown in Figure 9, if the blood that medical personnel will extract more amount is during as a corpse or other object for laboratory examination and chemical testing, only need take blood collector 7, and take over the inlet 73 that 81 two ends connect connecting base 51 first by-paths 514 and blood collector 7 respectively with first, need not just the blood that refluxes automatically directly can be entered in the room 71 of blood collector 7 through connecting base 51, first adapter 81 by conduit 6 by pull push rod 4, blood is not contacted with the external world or medical personnel, reduce the chance of polluting.

As shown in figure 10, be connected part 5a and comprise connecting base 51a, cap 52a, resistance joint chair 53 and rubber ring pad 54.

Connecting base 51a has first and second by-path 514,515 that radially extends and be communicated with runner 513.

Resistance joint chair 53 has around axis 1X and defines perforation 531 ring wall 532.Ring wall 532 be formed with the open end 533 that places for syringe 2 ports of export 223 and be placed through resistances in the connecting base 51a part runner 513 connect end 534 and with the pore 535 of second by-path, 515 conductings.

Rubber ring pad 54 is that the resistance that is placed on resistance joint chair 53 connects between end 534 and the connecting base 51a.After needle body 32 pumpbacks were gone in the tube chamber 41 of push rod 4, rubber ring pad 54 can be by the hole after elastoplasticity involution needle body 32 pumpbacks of itself, and airtight and blocking-up runner 513, makes first by-path 514 can not see through runner 513 and be communicated with second by-path 515.

The room 71a of blood collector 7a can be installed in a relatively large blood corpse or other object for laboratory examination and chemical testing, which is provided with air guide port 74.

Adapter group 8a has two ends socket connecting base 51a first by-path 514 and the first adapter 81a of connection blood collector 7a inlet 73a and second adapter 82 that two ends connect blood collector 7a air guide port 74 and connecting base 51a second by-path 55 respectively respectively.Whereby, utilize resistance joint chair 53 and rubber ring pad 54 to intercept first by-path 514 and second by-path 515, making 515 of first by-path 514 and second by-paths must see through blood collector 7a could be communicated with.If patient's blood pressure deficiency so that blood reflux automatically, and need to extract a more amount blood corpse or other object for laboratory examination and chemical testing for detecting or during antibacterial culturing, medical personnel's pull push rod 4 backward then, the blood that just can make extraction by conduit 6 through connecting base 51a, first takes over 81a directly enters in the room 71a of blood collector 7a, and the air in the blood collector 7a room 71a is then taken over 82a by air guide port 74 through second, the pore 535 of resistance joint chair 53, perforation 531 enters in the duct 21 of syringe 2, blood can be entered in the room 71a of blood collector 7a smoothly, blood is not contacted with the external world or medical personnel, reduce the chance of polluting.

As shown in figure 11, connecting base 51 has first by-path 514 that extends and be communicated with runner 513 along the radial line direction.

Resistance joint chair 55 tools are around axis 1X and define the ring wall 552 of perforation 551, and ring wall 552 is formed with the open end 553 that can place for syringe 2 ports of export 223, be set in resistances in the connecting base 51 part runners 513 connects end 554 and extend and second by-path 555 of communication bores 551 along the radial line direction.

Rubber ring pad 54 is that the resistance that is placed on resistance joint chair 53 connects between end 534 and the connecting base 51.

Whereby, can utilize resistance joint chair 55 and rubber ring pad 54 to intercept first and second by-path 514,555 equally, making 555 of first by-path 514 and second by-paths must see through blood collector 7a could be communicated with, enter in the duct 21 of syringe 2 through resistance joint chair 55 by second by-path 555 thereby the blood that extracts can be gone in the blood collector 7a and with the air in the blood collector 7a through connecting base 51 dispatch by conduit 6, make blood can enter in the blood collector 7a smoothly, do not contact, reduce the chance of polluting with the external world or medical personnel.

In addition, as shown in Figure 12 and Figure 13, syringe 9 of the present invention also can shorten length, and it has the tube wall 93 that defines small-bore section 91 and large aperture section 92.

Arrival end 932, outer surface 934 that is formed with several grip parts 933 that the port of export 931, contiguous large aperture section 92 and the confession push rod 4 that tube wall 93 has contiguous small-bore section 91 and supplies needle body 32 to pass penetrates and the inner surface 936 that is formed with several screw thread card ribs 935.

Syringe 9 can be connected with connecting base 51 with small-bore section 91 equally, and push rod 4 can screw togather with the screw-shaped fin 425 screw thread card rib 935 with syringe 9 equally, and push rod 4 spiral shells are entered in the large aperture section 92 of syringe 9.Whereby, medical personnel only need to grip with hands the grip part 933 of syringe 9, just can utilize needle body 32 to puncture in the blood vessel of animal body, in guiding catheter 6 intravasations, when blood is back in the syringe 9 along needle stand 31 by needle body 32 automatically; Or revolve blood that pulling-pushing rod 4 can extract backflow backward to syringe 9 time, just represent that needle body 32 and conduit 6 are correctly in the intravasation, medical personnel can carry out the operation that aforementioned drawing back needling body 32 enters push rod 4 tube chambers 41 and blood drawing, needle body 32 is isolated in the push rod 4, after the release medical personnel finish 6 settings of intravenous injection conduit or blood drawing, contact with needle body 32 because tidying up syringe needle group 3, cause danger injured, that infect.

As shown in figure 13, syringe needle group 3 comprises hollow and the needle stand 31 made for transparent material, hollow and affixed and pass the needle body 32 of syringe 2, the needle guard 33 of hollow and the trocar sheath 34 of hollow by syringe 2 ports of export 223 with needle stand 31.Needle guard 33 is to coat needle body 32 and be connected part 5, and have bore big and with the port 331 of syringe 9 fits.

Trocar sheath 34 is to coat push rod 4, and has and syringe 9 belled socket ends 341.Whereby, can isolate needle body 32 and push rod 4 with needle guard 33 and trocar sheath 34 respectively, prevent medical personnel before intravenous injection conduit 6 is provided with, the behavior of wrong stylus body 32 or push rod 4.

Conclude above-mentionedly, of the present invention have following advantage and an effect:

1, the present invention only needs gently that turn push rod 4 can form the moving function that attracts, and syringe needle group 3 is kept somewhere in the push rods 4, whereby, enables to isolate syringe needle groups 3 with push rod 4, exempts medical personnel and contacts with needle body 32 because tidying up syringe needle group 3, causes danger injured, infection.And the assembly that the present invention utilizes special structural design, simplifies not only can reduce the contaminated chance of assembly, and reduces material, assembling, detection cost, and practicality and convenience can promote intravenous injection the time.

2, because the protruding side face 316 of arc of needle stand 31 has the amplification effect of convex lens, therefore, as long as blood is arranged by needle body 32 needle stand 31 of flowing through, the protruding side face 316 of arc that will see through needle stand 31 clearly displays, and inform that medical personnel's needle body 32 and conduit 6 correctly are set in the blood vessel, so the present invention does not need to change the structural design of needle body 32, just can reach existing blood function really.

3, drawing back needling body 32 of the present invention and be retained in conduit 6 in the blood vessel after, the action that medical personnel can draw blood immediately, in the direct suction syringe 2 of blood, or borrow adapter group 8 with in the blood suction blood collector 7, the process of whole collection blood, do not need to unload syringe 2 and connecting base 51, more do not need to change the blood corpse or other object for laboratory examination and chemical testing of blood drawing syringe or the extraction of transfer syringe, therefore, reducing a blood corpse or other object for laboratory examination and chemical testing contacts with the external world or medical personnel's hand, blood corpse or other object for laboratory examination and chemical testing pollution problems be can reduce, and operational convenience of use and simplification promoted.

Claims

1, a kind of have the injection and a safe apparatus of blood drawing function, syringe needle group, the Slide Group that it comprises syringe, be fixedly arranged on syringe one end be located at syringe with interior push rod, Slide Group be located at syringe one end the linking part and and the conduit that is connected of linking part; It is characterized in that described linking part comprises having along axis direction runs through runner and extends and be communicated with the connecting base of first by-path of runner along the radial line direction; Conduit be fixed in connecting base runner end and can keep somewhere in blood vessel with from connecting base to the hollow tube of intravascular injection/in blood vessel to the blood drawing of first by-path.

2, the safe apparatus with injection and blood drawing function according to claim 1 is characterized in that described connecting base first by-path outlet is arranged with the cap with its sealing.

3, the safe apparatus with injection and blood drawing function according to claim 1 is characterized in that described connecting base first by-path outlet is connected with by the adapter group that connects blood collector; Blood collector has the ring wall that defines room and is formed with inlet; The adapter group has two ends difference socket connecting base first by-path and connects first of blood collector inlet takes over.

4, the safe apparatus with injection and blood drawing function according to claim 3 is characterized in that described connecting base has second by-path that radially extends and be communicated with runner; Be provided with resistance joint chair and rubber ring pad between first and second by-path in the connecting base part runner; The resistance joint chair has around axis and defines the ring wall of perforation; Ring wall is formed with the open end that places for the syringe port of export, be placed through resistance in the connecting base part runner connect end and with the pore of the second by-path conducting; The resistance that rubber ring pad system is placed on the resistance joint chair connects between end and the connecting base, and the blocking-up runner, separates first and second by-path; Blood collector is provided with air guide port; The adapter group have two ends respectively socket connecting base first by-path be connected that first between the blood collector inlet taken over and two ends connect the adapter of second between blood collector air guide port and connecting base second by-path respectively.

5, a kind of have the injection and a safe apparatus of blood drawing function, and syringe needle group and Slide Group that it comprises syringe, be fixedly arranged on syringe one end are located at syringe with interior push rod; It is characterized in that described syringe has around axis and defines the tube wall in duct; The duct has small-bore section and large aperture section; Tube wall has the port of export of contiguous small-bore section and the port of export is reverse and the arrival end of contiguous large aperture section; The syringe needle group comprises hollow needle stand and hollow and the needle body affixed with needle stand; Needle stand is removable to be positioned syringe duct small-bore end and outstanding towards the large aperture, so that needle body is passed by the syringe port of export; Push rod system slides and is inserted in the limited propelling movement stroke of syringe large aperture Duan Bingzuo, and it has first and second end face of sealing and is extended to second end face and be the tube chamber of utmost point low pressure state by first end face.

6, the safe apparatus with injection and blood drawing function according to claim 5 is characterized in that described syringe needle group is arranged with the linking part of an end connecting duct; Being connected part comprises having along axis direction and runs through runner and extend and be communicated with the connecting base of first by-path of runner along the radial line direction; Connecting base is fixed in the syringe port of export with an end cover; Conduit be fixed in connecting base runner end and can keep somewhere in blood vessel with from connecting base to the hollow tube of intravascular injection/in blood vessel to the blood drawing of first by-path.

7, the safe apparatus with injection and blood drawing function according to claim 6 is characterized in that described connecting base has second by-path that radially extends and be communicated with runner; Be provided with resistance joint chair and rubber ring pad between first and second by-path in the connecting base part runner; The resistance joint chair has around axis and defines the ring wall of perforation; Ring wall is formed with the open end that places for the syringe port of export, be placed through resistance in the connecting base part runner connect end and with the pore of the second by-path conducting; The resistance that rubber ring pad system is placed on the resistance joint chair connects between end and the connecting base, and the blocking-up runner, separates first and second by-path.

8, the safe apparatus with injection and blood drawing function according to claim 6 is characterized in that being provided with in the described connecting base part runner resistance joint chair and rubber ring pad; The resistance joint chair has around axis and defines the ring wall of perforation; Ring wall is formed with the open end that places for the syringe port of export, the resistance that is placed through in the connecting base part runner connects end and extends also second by-path of communication bores along the radial line direction; The resistance that rubber ring pad system is placed on the resistance joint chair connects between end and the connecting base, and the blocking-up runner, separates first and second by-path.

9, the safe apparatus with injection and blood drawing function according to claim 5 is characterized in that described syringe small-bore section has the hole wall that forms number Ka Gou; Needle stand has the section of fastening, the number form that fasten in the section of syringe small-bore and is formed in the protruding bolt of the section of fastening side face to engage with syringe small-bore section Ka Gou.

10, the safe apparatus with injection and blood drawing function according to claim 5 is characterized in that described push rod has the surrounding wall and the bullet seat of the open first end face tube chamber of the formation of defining; Bullet seat system is closed in surrounding wall first end face unloading, its have towards the syringe needle group and form the end face of draw-in groove and number by end face along the draw-in groove wall Ka Gou that extends of shape in the shape of a spiral; Needle stand have extend into large aperture section and the engaging section that engages with bullet seat draw-in groove and number form be formed in the engaging Duan Duan protruding bolt.

11, the safe apparatus with injection and blood drawing function according to claim 8 is characterized in that the card rib that described syringe tube wall has several neighboring entry ends and is equally spaced in the form of a ring along inner surface; The contiguous second end face outer surface of push rod surrounding wall has several touching with the mutual sandbar of syringe tube wall card rib and screws togather the fin that is the screw-like extension.

12, the safe apparatus with injection and blood drawing function according to claim 5 is characterized in that contiguous second end face of described push rod surrounding wall has number along the linear guide rail that extends of inner surface.

13, the safe apparatus with injection and blood drawing function according to claim 8 is characterized in that described hollow needle stand is that transparent material is made, and engaging section of hollow forms the protruding side face of arc of the amplification effect with convex lens on it.