CN2834610Y

CN2834610Y - Safety injection catheter

Info

Publication number: CN2834610Y
Application number: CN 200520132779
Authority: CN
Inventors: 黄光中
Original assignee: 吴佩珍
Priority date: 2005-11-18
Filing date: 2005-11-18
Publication date: 2006-11-08
Anticipated expiration: 2015-11-18

Abstract

The utility model relates to a safety injection catheter which comprises a catheter body, a valve body, a guiding sheath and a cover body, wherein the catheter body is provided with an injection pipe, one end of the injection pipe is provided with a seat body and the seat body forms a step edge shape. A through hole of the injection pipe passes through the center of the seat body, the injection pipe is provided with a branch pipe which is inclined with the injection pipe and the injection pipe is communicated with the branch pipe. The valve body is made of a silicon rubber block, the valve body is arranged in the seat body, the top surface of the valve body is cut with a plurality of slits to form a plurality of isolation sheets, the isolation sheets can be freely bent after the compression and the isolation sheets can recover the original state after the pressure release. The guiding sheath is provided with a sheathing part and is sheathed on the step edge of the seat body, the other side of the guiding sheath is provided with a short pipe and convex lugs are positioned at both sides of a pipe opening. The side wall of the cover body is extended with a buckled handle, and both sides of the inner part of the cover body are provided with buckled lugs which can be mutually clamped with the convex lugs. When the nursing personnel adds medicament for patients who inject drop, the structure which is matched with a plastic needle head not only can avoid a risk that the nursing personnel is punctured by a needle, but also can prevent the back flow of physic liquor.

Description

The safety injection conduit

Technical field

This utility model relates to a kind of conduit tube component when being used to inject drop or blood transfusion, can prevent that especially medicinal liquid from producing backflow phenomenon when injection, and because of catheter body is provided with lid, not only can prevent dust, and also can avoid conduit tube component to lose.

Background technology

Existing drop safety injection conduit includes a carrier pipe, two ends respectively are provided with a syringe needle insertion point drop bottle and human body respectively, one side of close some drop bottle is provided with one and monitors bottle, and a side of close human body is provided with a chemical feed pipe, so that inject in the drop process with the syringe dosing.

Be illustrated in figure 8 as chemical feed pipe sketch map commonly used, this chemical feed pipe A one end has a dosing mouth A1, the other end with respect to this dosing mouth A1 is a port of export A2, the carrier pipe B of this port of export A2 crack and drop links, and this chemical feed pipe A has an oblique arm A3, and this carrier pipe B links this arm A3, makes drop enter chemical feed pipe A by arm A3, and flow out by port of export A2, dosing mouth A1 is sealed by an overcoat C packing one rubber membrane D in this dosing mouth A1 crack.

When needing the dosing injection, the syringe needle E1 of syringe E is punctured rubber membrane D, be injected in the human body again so that medicament is squeezed in the chemical feed pipe A.Treat that syringe needle E1 extracts back rubber membrane D and can will be pushed driving fit by the hole that syringe needle E1 punctures by the elasticity tension of self.

Summary of the invention

The technical problem that institute's desire solves

As mentioned above, the mode as if puncture rubber membrane D with syringe needle E1 has following shortcoming: when (one) punctures rubber membrane D with syringe needle E1, need one to hold chemical feed pipe A, one holds syringe E carries out, if careless slightly, the nursing staff may be stabbed hands by syringe needle E1, and causes infection problems.When (two) syringe needle E1 punctures rubber membrane D, may produce the rubber chip, and this rubber chip may flow in the human vas, damage.(3). may reach the inject time of potion drop more than one day, all need inject as if the medicament of need annotating during this period by chemical feed pipe A, puncturing rubber membrane D with syringe needle E1 repeatedly can make rubber membrane D go up the plural hole of generation, or the hole is enlarged and can't utilize the elastic property closure again, cause the drop seepage, even extraneous virus is entered in the safety injection conduit via the hole of rubber membrane D, cause infection.

The technological means of dealing with problems

First technological means of the present utility model is design one catheter body, comprises an ascending pipe, and an end of ascending pipe is provided with a pedestal, and the through hole of ascending pipe passes pedestal, and this pedestal is that terrace edge shape central authorities are provided with a space.This ascending pipe has an arm that tilts with it, flows into ascending pipe and can communicate with the liquid of arm.

Second technological means is design one valve body, and this valve body is located in the space of pedestal, and its end face has been cut the complex trace slit and formed number and do shaping piece, and the interface between every shaping piece separates, and can freely bend energy reinstatement behind the release of pressure after therefore whenever doing the shaping piece pressurized.This valve body has sidewall, is subjected to exerting pressure of syringe downwards when whenever doing shaping piece, can form a channel.

The 3rd technological means is design one guide sleeves, and it has a sleeved part and is sleeved on the terrace edge of described pedestal, and sleeved part engages with pedestal and forms a space; The guide sleeves opposite side is a short tube, this short tube crack needle insertion, and the through hole of short tube passes sleeved part, so forms a channel between guide sleeves, valve body and ascending pipe three assemblies, is positioned at mouth of pipe both sides and is provided with a lug.

The 4th technological means is another embodiment of this utility model, and wherein, the design of guide sleeves and valve body is constant, only catheter body is changed slightly.Terrace edge is established a male part under the pedestal of catheter body, and male part central authorities are provided with a through hole; Other establishes a lid, cover the guide sleeves top, this lid can be circular or square, end face is provided with a marginal ridge, extend a microscler button handle from sidewall, this button is made the crack by rubber or the higher material of pliability, button can be made into spheroidal or inverted triangle taper to free end, and passes through described through hole and join fixing.The lid portion inside both sides are provided with a buckle ear, form to tighten channel between two buckle ears, and two lugs by guide sleeves stretch into the deflation channel, and engage mutually with two buckle ears of lid, with the locking lid.

When need are injected lid being opened, needn't be dismantled joint but detain, utilize the bendable folding endurance of button handle, directly lid is moved toward the next door, is principle with the mouth of pipe that does not block guide sleeves, the syringe needle alignment guidance can be overlapped and inject medicament.

Beneficial effect with respect to background technology

When injection needle inserts the mouth of pipe of guide sleeves and the shaping piece by valve body, because the characteristic of material itself can be bent shaping piece downwards, and form a channel around being attached at syringe needle, allow to smooth injection medicament, in case when injection finished to draw back syringe needle, shaping piece also can be replied original seat.

This design need puncture the rubber membrane on the chemical feed pipe when promptly having solved common injection, if careless slightly nursing staff may be by the needle sting hands, and cause infection problems.Even the repeated multiple times injection also needn't worry to produce the problem that the rubber chip flows into human vas.Can not cause leakage problems because of injection repeatedly makes the hole expansion on the rubber membrane yet.In addition, lid design of the present utility model also can intercept dust and enter conduit via guide sleeves in the time need not injecting.

Description of drawings

Fig. 1 is a preferred embodiment exploded view of the present utility model.

Fig. 2 is an embodiment constitutional diagram of the present utility model.

Fig. 3 is valve body embodiment of the present utility model.

Fig. 4 is the user mode figure of embodiment.

Fig. 5 is another embodiment exploded view of this utility model.

Fig. 6 is an embodiment constitutional diagram of the present utility model.

Fig. 7 is embodiment user mode figure.

Fig. 8 is chemical feed pipe constitutional diagram commonly used.

Among the figure

1. catheter body 11. ascending pipes

12. arm 13. male part

131. through hole 14. pedestals

2. valve body 21. sidewalls

22. slit 23. shaping pieces

3. guide sleeves 31. sleeved part

32. short tube 321. lugs

4. syringe 5. lids

52. button is 53. buckle ears

54. marginal ridge 6. conduits

7. conduit

A chemical feed pipe A1. dosing mouth

A2. port of export A3. arm

B carrier pipe C overcoat

D rubber membrane E syringe

E1. syringe needle

The specific embodiment

Following conjunction with figs. and element numbers are done more detailed description to embodiment of the present utility model, can implement according to this after studying this description carefully so that know the people of this technology.

See also Fig. 1 and Fig. 2, be a preferred embodiment of the present utility model.Comprise a catheter body 1, a valve body 2 and a guide sleeves 3.

This catheter body 1 is provided with an ascending pipe 11, and this ascending pipe 11 is provided with a pedestal 14 with terrace edge, and pedestal 14 borings also communicate with ascending pipe 11.Ascending pipe 11 has an arm 12 that tilts with it, imports this arm 12 and can communicate with the medicinal liquid of ascending pipe 11.Described catheter body 1 can adopt one-body molded or with ascending pipe 11 and pedestal 14 two parts with glue bond; Described body can be adopted pipe, square tube or other geometry.

This guide sleeves 3 is provided with the sleeved part 31 of a boring, can form an inner space if sleeved part 31 is engaged on the terrace edge of pedestal 14, and the mode of joint can be adopted direct fit or with glue bond.One short tube 32 is located at sleeved part 31 tops and is communicated with it, and the mouth of pipe both sides of this short tube 32 are provided with a lug 321.Being designed to convenient existing plastic spike and can inserting in the mouth of pipe and enter of short tube 32 with the guiding medicinal liquid, in addition, add lug 321 cracks in order to cooperate a kind of syringe (figure does not disclose) of the U.S. with rotary button hook, rotate after the mouth of pipe is established button hook and lug 321 cards when syringe needle inserts again, both are resisted mutually and fix.Generally when carrying out fluid infusion, can be drop bottle outer setting one prelum (figure disclose), common safety injection conduit to produce bigger pressure drop entered in the human body, owing to only can bear the pressure of 300mm-Hg, the phenomenon that often causes drop to reflux.Therefore in the middle of present embodiment, design this valve body 2, made by the silica gel piece, between described catheter body 1 and guide sleeves 3, it has sidewall 21 and is arranged in the pedestal 14, connect the mode of establishing can adopt direct embedding also can glue bond.Cut at valve body 2 end faces and to establish several slit 22, slit 22 can be Y, X or cross, because slit 22 makes and causes several lobe shaping pieces 23, interface between each shaping piece 23 separates, shaping piece 23 lower edges have to recessed curvature (as shown in Figure 3), by the original characteristic of material, can bend downwards after whenever doing shaping piece 23 pressurizeds, and form a channel mouth (as shown in Figure 4).

See also the user mode of Fig. 4 for present embodiment, one conduit 6 a wherein end and arm 12 connects and establishes, another termination set up an office drop bottle or medicated bag (figure discloses), the free termination of ascending pipe 11 is established another conduit 7, and these conduit 7 other ends then connect and establish with the syringe needle that is positioned human body (figure discloses).During with syringe 4 dosings, earlier syringe needle is inserted in the short tube 32 of guide sleeves 3, this moment, syringe needle can be run into valve body 2, because the end face of valve body 2 is made into number lobe shaping piece 23, make syringe needle pass through shaping piece 23 in case exert pressure downwards, shaping piece 23 can be bent to form a channel downwards passes through syringe needle, can inject medicament by this, and conduit 7 can receive the drop that medicament and arm 12 from ascending pipe 11 are transmitted.When injection finishes syringe 4 is detached, shaping piece 23 can be returned to original position, can prevent that medicinal liquid from refluxing.

See also Fig. 5-7, be another preferred embodiment of the present utility model.Comprise a catheter body 1 same as the previously described embodiments, valve body 2 and guide sleeves 3.But set up a male part 13 at the following terrace edge of catheter body 1, male part 13 central authorities are provided with a through hole 131.Other establishes a lid 5 and covers guide sleeves 3 tops, and these lid portion inside both sides are provided with to form between a buckle ear 53, two buckle ears 53 tightens channel, stretches into the deflation channel by two lugs 321, and engages mutually with two buckle ears 53, with locking lid 5.Lid 5 rounded or square (figure does not disclose), end face has a marginal ridge 54, and sidewall extends a microscler button 52, and this button is made 52 cracks by rubber or the higher material of pliability, button can be made into spheroidal (figure announcement) or inverted triangle taper to 52 free ends, and passes through through hole 131 and join fixing.

Figure 7 shows that the user mode of second embodiment, need only when needing injection lid 5 is pulled away guide sleeves 3, because button has the bendable folding endurance to 52, therefore do not need free-ended joint is separated, directly lid 5 is dialled toward next doors that to move not block short tube 32 be principle, make syringe needle aim at the mouth of pipe and by shaping piece 23 formed channels, can the injection medicament, conduit 7 can receive the drop that medicament and arm 12 from ascending pipe 11 are transmitted.

The above only is in order to explain preferred embodiment of the present utility model; be not that attempt is in order to do any formal restriction to this utility model; thereby; all have in that identical creation spirit is following do relevant any modification of the present utility model or change, all must be included in the category of this creation intention protection.

Claims

1. safety injection conduit comprises:

One catheter body is provided with an ascending pipe, and this ascending pipe one end is provided with a pedestal with terrace edge, and communicates with this ascending pipe, and described ascending pipe has an arm that tilts with it, and this arm communicates with described ascending pipe;

One guide sleeves is provided with a sleeved part and is matched with on the terrace edge of this pedestal, and a short tube is located at this sleeved part top and is communicated with it, and the mouth of pipe both sides of this short tube are provided with a lug;

One valve body is made by the silica gel piece, is provided with sidewall and is embedded in the described pedestal, and this valve body end face is provided with several slit, makes to form number lobe shaping piece, and the interface between each shaping piece separates, and whenever doing shaping piece can freely bend.

2. safety injection conduit as claimed in claim 1, wherein, described shaping piece lower edge has to recessed curvature.

3. safety injection conduit as claimed in claim 1, wherein, described ascending pipe and arm are pipe.

4. safety injection conduit as claimed in claim 1, wherein, the slit of described valve body end face is a Y-shaped.

5. safety injection conduit as claimed in claim 1, wherein, the slit of described valve body end face is the X font.

6. safety injection conduit comprises:

One catheter body is provided with an ascending pipe, and this ascending pipe one end is provided with the pedestal of a tool terrace edge, and communicate with this ascending pipe, terrace edge is set up a male part under this pedestal, and these male part central authorities are provided with a through hole, described ascending pipe has an arm that tilts with it, and this arm communicates with described ascending pipe;

One guide sleeves is provided with a sleeved part and is matched with on the terrace edge of this pedestal, and a short tube is located at this sleeved part opposite side and is communicated with it, and the mouth of pipe both sides of this short tube are provided with a lug; One valve body is provided with sidewall and is embedded in the described pedestal, and this valve body end face is provided with several slit, makes to form number lobe shaping piece, and the interface between each shaping piece separates, and whenever doing shaping piece can freely bend;

One lid, sidewall extend a microscler button handle, and the free end of this button handle engages with the through hole of described male part.

7. safety injection conduit as claimed in claim 6, wherein, described lid is circular, and inner both sides are provided with a buckle ear, form one between two buckle ears and tighten channel, and described lid end face has a marginal ridge.

8. safety injection conduit as claimed in claim 6, wherein, described lid is square.

9. safety injection conduit as claimed in claim 6, wherein, the free end of described button handle is the inverted triangle taper.

10. safety injection conduit as claimed in claim 6, wherein, described button be spheroidal by end.