CN203263936U - Remaining needle component - Google Patents
Remaining needle component Download PDFInfo
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- CN203263936U CN203263936U CN 201320196543 CN201320196543U CN203263936U CN 203263936 U CN203263936 U CN 203263936U CN 201320196543 CN201320196543 CN 201320196543 CN 201320196543 U CN201320196543 U CN 201320196543U CN 203263936 U CN203263936 U CN 203263936U
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- pin
- interior
- guard member
- cushion
- pedestal
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Abstract
The utility model provides a remaining needle component which can prevent a sealing component from plastic deformation when an inner needle is pulled out of an outer needle and an outer needle base. The remaining needle component is provided with the inner needle with a sharp-pointed needle point on the tip end portion, and the inner needle is inserted in the outer needle with the outer needle base arranged on the base end portion. A protection piece and hemostatic rubber are arranged in the inner hole of the outer needle base. The hemostatic rubber is closer to the tip end side of the inner hole than the protection piece, and therefore the inner hole is sealed. The inner needle penetrates through the hemostatic rubber, and the hemostatic rubber enables a through hole which is penetrated through by the inner hole to elastically restore and to be blocked. When the inner needle is moved in the direction where the inner needle is pulled out of the outer needle base, the protection piece covers the tip end portion of the inner needle to carry out protection. In addition, an inner needle inserting hole is formed in the protection piece, and the inner needle inserting hole is formed to enable the inner needle not to generate large excursion in the extending direction of the axis of the inner needle when the inner needle is pulled out of the hemostatic rubber.
Description
Technical field
This utility model relates to puncture vessel when hemodialysis, transfusion or blood sampling and at the indwelling needle assembly of this place indwelling.
Background technology
Medical personnel (practitioner) use indwelling needle assembly when the patient being carried out hemodialysis, transfusion or blood sampling etc., as indwelling needle assembly, the assembly of the such conduit of patent documentation 1 and implanting needle is for example arranged.
The assembly of patent documentation 1 possesses duct base cylindraceous (catheter hub) (outer pin pedestal), is fixed in the conduit (outer pin) of the top end of duct base, has the pin (interior pin) of sharp-pointed needle point and the pin pedestal that is fixed in the cardinal extremity of pin at top end.Duct base has the hole, side, and this hole, side is connected in pipe joint (adapter) by tubular portion and extension tube.Again, in duct base, be provided with plug (containment member) than the more close base end side in side hole, by the cardinal extremity of plug sealing duct pedestal.Cushion admittance pedestal tube and conduit to be to connect this plug, and the needle point that is engaged in pin under the state of duct base at the pin pedestal is outstanding from the top end of conduit.
In the assembly of the patent documentation 1 that consists of as mentioned above, plug is made of the such elastic component of silicone rubber, and the through hole that remains in when extracting pin from duct base beyond the Great Wall is inaccessible.By means of this, even after pin is extracted, can prevent that also the interior liquid of duct base from passing described through hole and outwards spilling from duct base.
The prior art document
Patent documentation 1: Japanese kokai publication hei 8-257129 communique.
The utility model content
The problem that utility model will solve
In the indwelling needle assembly of patent documentation 1, the wing (fin) of catching the pin pedestal or being formed at this by medical personnel pulls that it is separated from the pin pedestal, pin can be extracted from conduit and duct base.In indwelling needle assembly, medical personnel extract pin as the crow flies along its axle when extracting pin, by pin being extracted as the crow flies the through hole obturation that makes plug and the liquid in duct base can not spill.But, thereby the aperture that when pin is departed from this axle and extracts, the plastic deformation through hole occurs plug becomes large, also can't inaccessible situation even plug elastic return through hole may occur.When through hole can't be inaccessible as mentioned above, the medicinal liquid in duct base or blood passed through hole and spill laterally.
Therefore the purpose of this utility model is to provide the indwelling needle assembly of containment member generation plastic deformation in the time of can preventing from interior pin is extracted from outer pin and outer pin pedestal.
The means of dealing with problems
Indwelling needle assembly of the present utility model possesses: the interior pin that has sharp-pointed needle point in tip end portion; Be arranged at the interior pin pedestal of the base end part side of described interior pin; Insert the outer pin of the hollow that is connected with described interior pin; Insert the outer pin pedestal that is connected with described interior pin and forms the inner space with outer cushion port and the slotting port of pedestal; Be arranged at described inner space, cover the tip end portion of described interior pin and the guard member (protector) protected from described outer pin pedestal when the mobile described interior pin of the direction of extracting; And be arranged in described inner space containment member in the space between more close described outer cushion port side, the described outer cushion port of sealing and the slotting port of described pedestal than described guard member; described outer cushion port is arranged at the base end part of described outer pin, described pedestal is inserted port described interior pin pedestal releasably is installed, described outer pin pedestal has to be formed at from described outer cushion port and described pedestal inserts port different position, and be connected in the delivery port than the part of the more close described outer cushion port side of the described containment member of described inner space, described interior pin connects described containment member, thereby described containment member forms the through hole elastic return that described interior pin is connected and makes its inaccessible structure, described guard member has guard member main body to be opened/closed, the close mechanism of closed described guard member main body and the slotting interior cushion through hole that is connected with described interior pin, described guard member main body forms under open mode and is connected by described interior pin, the structure that covers the tip end portion of the described pin that is positioned at the guard member main body and protect under closure state, described close mechanism forms under state in the tip end portion of described interior pin is inserted described guard member main body, the structure of closed described guard member main body when the mobile described guard member main body of the direction of extracting from described outer pin pedestal.
According to this utility model, mobile guard member main body on the direction of extracting from outer pin pedestal is protected with the tip end portion that covers interior pin by the protection member of closed guard member main body.Again, when extracting interior pin from containment member, interior cushion through hole prevents from occuring the situation of larger movement on the direction of the perpendicular direction of extracting with interior pin.Therefore, even medical personnel do not extract interior pin pedestal along the axle of interior pin, also by pin in the support of interior cushion through hole so that be through with the part of the containment member of interior pin and can roughly extract as the crow flies.By means of this, thereby the part that can suppress described perforation crooked through hole that enlarges containment member on the direction of intersecting can suppress containment member generation plastic deformation.By means of this, can prevent that after extracting interior pin through hole can't be inaccessible and spill from here blood etc.
In above-mentioned utility model, preferably, described guard member has two described interior cushion through holes, described two interior cushion through holes on described direction of extracting across arranged spaced.
According to said structure, two interior cushion through holes on the direction of extracting across arranged spaced, when not extracting described interior pin pedestal along the axle of interior pin in pin prop up and be held in two interior cushion through holes.Therefore, can reduce the power of interior pin expansion through hole, thereby further suppress containment member generation plastic deformation.
In above-mentioned utility model; preferably; described interior pin is outstanding laterally near the tip end portion of its outer peripheral face; and have the junction surface that engages with described interior cushion through hole of the side by mobile described interior pin on described direction of extracting, thereby described guard member main body forms by described junction surface be engaged in described interior cushion through hole to join in the structure of the direction movement of extracting with described interior pin from described outer pin pedestal.
According to said structure, by pin in the direction of extracting from outer pin pedestal is mobile, can be on the direction of extracting from outer pin pedestal mobile guard member main body.That is to say, in only just can covering by the guard member main body by pin in the direction of extracting from outer pin pedestal is mobile, the tip end portion of pin is protected, thereby makes the protection operation of the needle point of interior pin be more prone to.
In above-mentioned utility model, preferably, a described side's interior cushion through hole is positioned at the base end part side than the opposing party's the more close described pin of cushion through hole, a described side's interior cushion through hole has the aperture less than the external diameter at described junction surface, and described the opposing party's interior cushion through hole has the aperture larger than the external diameter at described junction surface.
According to said structure, the formation position that can make the junction surface, and can be shortened from the length of the outstanding interior pin of the opposing party's interior cushion through hole away to the base end part side from the needle point of interior pin.Therefore, the formation at the junction surface in interior pin becomes easily, and can shorten the length of guard member main body.
The utility model effect
According to this utility model, containment member generation plastic deformation in the time of can preventing from interior pin is extracted from outer pin and outer pin pedestal.
Description of drawings
Fig. 1 is the front view as the indwelling needle assembly of example of the present utility model;
Fig. 2 is the profile of the indwelling needle assembly of cut away view 1;
Fig. 3 is the amplification profile of the indwelling needle assembly of enlarged drawing 2;
Fig. 4 is the amplification profile of scope X1 of the indwelling needle assembly of enlarged drawing 3;
Fig. 5 is in indwelling needle assembly, extracts the profile of the state of interior pin from outer pin pedestal;
Fig. 6 is the amplification profile of scope X2 of the indwelling needle assembly of enlarged drawing 5;
Symbol description
1 indwelling needle assembly;
3 hemostasis rubber;
4 guard members;
11 interior pins;
The 11a needle point;
The 11b junction surface;
12 interior pin pedestals;
13 outer pins;
14 outer pin pedestals;
The 24a endoporus;
The outer cushion port of 24b;
The 24c pedestal is inserted port;
25 flexible pipe joint portions;
The 25a delivery port;
30 through holes;
40 guard member main bodys;
41 effect supports;
Cushion through hole in 42a, 43a;
46,47 protection sections.
The specific embodiment
Referring to the structure of above-mentioned description of drawings according to the indwelling needle assembly 1 of example of the present utility model.The concept of the direction in example is for convenience of explanation and uses, rather than hint is for the structure of indwelling needle assembly 1, with the configuration of these structures and towards etc. be defined in this direction.Again, below the structure of the indwelling needle assembly 1 of explanation is only an example of the present utility model.That is, this utility model is not limited to the example of following explanation, can increase in the scope of the aim that does not break away from utility model, deletes, change.
＜indwelling needle assembly 〉
Indwelling needle assembly 1 is inputing to medicinal liquid in blood vessel by this pin with pin puncture vessel etc. and keep somewhere, or uses when taking blood from blood vessel.As depicted in figs. 1 and 2; indwelling needle assembly 1 possess remaining needle main body 2, the protection of hemostasis rubber 3 and needle point with guard member (below; only referred to as " guard member ") 4, remaining needle main body 2 forms along axis L1, is made of interior pin 11, interior pin pedestal 12, outer pin 13 and outer pin pedestal 14.In addition, in following explanation, will be called tip end portion with respect to the position of the medical personnel's of the puncture of carrying out pin by 1 couple of patient of indwelling needle assembly amphi position side, the position of medical personnel's proximal side will be called base end part.Again, so-called axis direction is the direction along the axis L1 of remaining needle main body 2.
＜remaining needle main body 〉
As shown in Figure 3, interior pin 11 is the roughly hollow needle cylindraceous of making by such as the synthetic resin of the metal material of rustless steel, aluminum, aluminium alloy, titanium and titanium alloy etc. or hard, and is roughly consistent with axis L1 along its axis L2() extend as the crow flies.But interior pin 11 has the sharp-pointed needle point 11a that forms puncture vessel in tip end portion, be provided with interior pin pedestal 12 at base end part.
Flexible pipe joint portion 25 forms roughly cylindric, towards the base end side of Base body 24, and extend sideling with from the outer peripheral face of Base body 24 away to the radial direction outside.The endoporus 25a of flexible pipe joint portion 25 has a connected entrance 25b one is distolateral, and connected entrance 25b is connected in the endoporus 24a of Base body 24.Again, the endoporus 25a of flexible pipe joint portion 25 distolaterally has a delivery port 25c its another, and the open end that defines delivery port 25c is inserted through flexible pipe 26.Flexible pipe 26 is to have a flexual tubular element, and flexible pipe joint portion 25 is fixed in the one end.On the other hand, be provided with joint (connector) 27 on the other end of flexible pipe 26.
As depicted in figs. 1 and 2, joint 27 forms the Y type, is formed with respectively connected entrance 27a, 27b, 27c on each end.These three connected entrance 27a, 27b, 27c are communicated with by the endoporus 27d of joint 27, and a connected entrance in three connected entrance 27a, 27b, 27c is connected with flexible pipe 26 as the first connected entrance 27a.One in two remaining connected entrances is clogged by cap member 28 as the second connected entrance 27b, and also a remaining connected entrance embeds as third connecting mouth 27c has filler plug (injection plug, calparine cap) 29 so that it is clogged.Remaining needle main body 2 is connected on not shown infusion set (infusion set) and blood-taking device (blood collecting set) by this filler plug 29.
In the remaining needle main body 2 that consists of as mentioned above, interior pin 11 is inserted in logical outer pin 13, and the needle point 11a of interior pin 11 is outstanding from the top end of outer pin 13.Again, the base end side of interior pin 11 is outstanding from the endoporus 14a of the outside pin pedestal 14 of the base end part of outer pin 13.The base end part of interior pin 11 extends to the pedestal of outer pin pedestal 14 and inserts port 24c, and the cap section 21 that pedestal is inserted interior pin pedestal 12 on the base end part that port 24c is arranged at interior pin 11 clogs.
When using remaining needle main body 2 to infuse and take a blood sample, at first medical personnel will insert outer pin 13 puncture vessels that are connected with interior pin 11 etc.By means of this, in the conducting blood vessel and in outer pin pedestal 14, the blood back (flashback) that endovascular blood flows into outer pin pedestal 14 occurs.After confirming this blood back, interior pin 11 is extracted from outer pin 13 and outer pin pedestal 14.At this moment, spill for blood (or medicinal liquid) is not inserted port 24c from pedestal, the endoporus 14a of pin pedestal 14 is provided with hemostasis rubber 3 outside.
＜hemostasis rubber 〉
As shown in Figure 3, the hemostasis rubber 3 as containment member is middle real roughly cylindrical members of being made by synthetic rubber or the thermoplastic elastomer (TPE) of polyisoprene etc.Hemostasis rubber 3 is embedded in the axis direction mid portion of the endoporus 24a of Base body 24, is positioned in endoporus 24a than the slotting port 24c side of the more close pedestal of connected entrance 25b of flexible pipe joint portion 25 and than the more close outer cushion port 24b side of guard member 4 described later.By means of this, endoporus 14a is split into the fluid space 31 that is connected in outer pin 13 and in conduit 26 and is connected in the guard member spatial accommodation 32 that pedestal is inserted port 24c, rubber 3 sealings of being stopped blooding of the space between these two spaces 31,32.Be formed with engagement groove 33 on circumferential whole circumference on the peripheral part of hemostasis rubber 3 again.On the other hand, on the interior perimembranous of pin pedestal 14, be formed with engagement projection 34 on circumferential whole circumference on corresponding to the position of this engagement groove 33 outside, this engagement projection 34 is engaged in and engages tongue 33.By means of this, hemostasis rubber 3 can't move on axis direction.
On the hemostasis rubber 3 that consists of as mentioned above, interior pin 11 connects around its axle center or axle center.Hemostasis rubber 3 is made of above-mentioned synthetic rubber or thermoplastic elastomer (TPE), has elasticity.Therefore, hemostasis rubber 3 is crimped on the outer peripheral face of interior pin 11, the space in sealing between pin 11 and hemostasis rubber 3.Even be crimped on as mentioned above hemostasis rubber 3 on the outer peripheral face of interior pin 11 mobile on axis direction in pin 11 also can keep sealing state.
Again, hemostasis rubber 3 is from wherein extracting the rear elastic return of interior pin 11, when extracting interior pin 11 in through hole 30 obturations that connect of pin 11.That is, though hemostasis rubber 3 from wherein extract after interior pin 11 also can seal fluid space 31 and guard member spatial accommodation 32 between the space.No matter whether the interior pin of hemostasis rubber 3 as above 11 connects it, can both seal fluid space 31 and guard member spatial accommodation 32 between the space, what can prevent medicinal liquid or blood leaks to guard member spatial accommodation 32.Accommodate guard member 4 in guard member spatial accommodation 32.
＜needle point protection guard member 〉
The needle point 11a of pin 11 in guard member 4 forms when taking out interior pin 11 is extracted from outer pin 13 and outer pin pedestal 14 and to cover and the structure protected has guard member main body 40 and acts on support (action holder) 41.Guard member main body 40 forms the needle point 11a that covers interior pin 11 and the structure of protecting, by making such as the various metal materials of rustless steel, aluminum, aluminium alloy, titanium, titanium alloy, copper and copper series alloy etc.Guard member main body 40 is to make the thin plate bending distortion of above-mentioned metal material and the metal monolithic entity made, is formed at the case shape member of the roughly flat column that extends on axis direction.
About the structure of guard member main body 40, describe in further detail with reference to accompanying drawing 4, guard member main body 40 has roughly foursquare base plate 42 and top board 43.Base plate 42 and top board 43 separately, are configured to mutually relative and overlapping on axis direction.On base plate 42, be respectively equipped with integratedly a pair of flexible side plate 44,45 on relative two edge parts in its four each edge parts.A pair of flexible side plate 44, the 45th, the board member of 43 essentially rectangulars that extend from base plate 42 to top board, be configured to mutually relatively respectively.A pair of flexible side plate 44,45, its top end is outstanding from top board 43, has formed protection section 46,47 on each top end.
Each protection section the 46, the 47th, its top end lateral bend form the roughly board member of the word of falling J shape, extend at a slant towards another flexible side plate 45,44 from each flexible side plate 44,45 top end.These two protection sections 46,47 form shortlyer with respect to another protection section an of side protection section 46 47, cover top board 43(with reference to Fig. 6 described later thereby a side protection section 46 encases the tip end portion of another protection section 47).Two protection sections 46,47 by encasing as mentioned above form by two protection sections 46,47 and the cingens needle point spatial accommodation 48 of top board 43.This needle point spatial accommodation 48 is spaces that two ends form general triangular.Again, be respectively equipped with baffle 49 on the width both ends of a side protection section 46, baffle 49 clogs the two ends of needle point spatial accommodation 48.That is, each baffle 49 shape at the width both ends of mating protection section 46 respectively forms its side edge part, forms general triangular for the both ends that clog needle point spatial accommodation 48.
The a pair of flexible side plate 44,45 that each protection section 46,47 that consists of as mentioned above arranges, crooked at the bending section 44a, the 45a that are being positioned at its length direction middle body, extend at a slant so that enlarge laterally than the part of the more close top end side of bending section 44a, 45a.If describe in further detail, flexible side plate 44,45 has respectively fixed part 44b, 45b and the flexible 44c of section, 45c. Fixed part 44b, 45b are configured to rectangular with respect to base plate 42 and are forming to bending section 44a, 45a from base plate 42, and the flexible 44c of section, 45c enlarge laterally with respect to fixed part 44b, 45b and form at the top end from bending section 44a, 45a to a pair of flexible side plate.
Again, a pair of flexible side plate 44,45 has respectively choke valve (throttle) 51,52.Choke valve 51, the 52nd, rectangular hole roughly extends to the mid portion of the flexible 44c of section, 45c from the mid portion of fixed part 44b, 45b.Accommodate on choke valve 51,52 and form roughly rectangular tabular claw component 53,54. Claw component 53,54 is separately positioned on fixed part 44b, 45b integratedly, the same with the flexible 44c of section, 45c at bending section 44a, 45a bending to enlarge laterally.
On a pair of flexible side plate 44,45 that consists of as mentioned above, one of them flexible side plate 44 is provided with a pair of fixing head 55, is provided with integratedly a pair of fixed side 57 on another flexible side plate 45.A pair of fixing head 55 is connected in the width both ends of the fixed part 44b of a flexible side plate 44, extends with respect to the rectangular bending of fixed part 44b and towards another flexible side plate 45.On the other hand, a pair of fixed side 57 forms the roughly rectangle of extending towards top board 43, and the top end of any one is connected on an edge part of top board 43 integratedly.Again, the base end part of a pair of fixed side 57 is connected in the width both end sides of the fixed part 45b of another flexible side plate 45, and is at right angles crooked with respect to fixed part 45b.The base end part of crooked a pair of fixed side 57 is overlapped in respectively on described fixing head 55 as mentioned above, and is fixed in this.The guard member main body 40 that consists of as mentioned above forms roughly rectangular-shaped.
In guard member main body 40, be formed with interior cushion through hole 42a, 43a on the core of base plate 42 and top board 43 again.These two interior cushion through hole 42a, 43a overlook (that is, observing at axis direction from the base end side of interior pin 11) lower overlapped, on axis direction across arranged spaced.Again, two interior cushion through hole 42a, 43a form interior pin 11 can insert logical, be positioned at as the first interior cushion through hole 42a of the interior cushion through hole 42a of base plate 42 the cushion through hole 43a that is compared to top board 43 the second more close pin 11 of cushion through hole 43a the base end part side and form minor diameter.Again, the profile of interior cushion through hole 42a, 43a forms the movement of the radial direction that limits the interior pin 11 that is inserted through this, and the part of the perforation through hole 30 of interior pin 11 moves along axis L2.
On the peripheral part of the interior pin 11 of inserting logical interior cushion through hole 42a, the 43a that forms as mentioned above, the protruding junction surface 11b in the outside is formed at the top end side to radial direction.The external diameter of junction surface 11b is larger than the external diameter of the first interior cushion through hole 42a, and less than the external diameter of the described second interior cushion through hole 43a.By means of this, junction surface 11b is engaged in base plate 42 by the second interior cushion through hole 43a when extracting interior pin 11.
Again, on guard member main body 40, enlarging laterally, the tip end portion of therefore a pair of protection section 46,47 separately is formed with gap 59 between the tip end portion of a pair of protection section 46,47 due to a pair of flexible side plate 44,45 the flexible 44c of section, 45c bending.The interior pin 11 of inserting logical two interior cushion through hole 42a, 43a passes this gap 59, connects guard member main body 40.Again, interior pin 11 is extracted from guard member main body 40 so that needle point 11a when moving to base plate 42 side of guard member main body 40, then junction surface 11b is engaged in base plate 42.Junction surface 11b is configured to when it is engaged in base plate 42 needle point 11a and is contained between a pair of protection section 46,47.
Again, a pair of flexible side plate 44,45 was contained in a pair of protection section at 46,47 o'clock at needle point 11a, can make take bending section 44a, 44b as basic point that the flexible 44c of section, 45c are crooked makes it mutually close.By making as mentioned above the flexible 44c of section, 45c close, the tip end portion of a protection section 46 encases the tip end portion of another protection section 47 and closing gap 59.By closing gap 59, be formed with the needle point spatial accommodation 48(that surrounded by a pair of protection section 46,47 and top board 43 with reference to Fig. 6), accommodate the needle point 11a of interior pin 11 on this needle point spatial accommodation 48.That is to say, in covering by guard member main body 40, the needle point 11a of pin 11 protects.
As mentioned above guard member main body 40 by strain so that a pair of flexible side plate 44,45 flexible 44 c of section, 45c near and closed a pair of protection section 46,47, protected main body of the needle point 11a of interior pin 11 40 covers and protected.Protecting as mentioned above on the guard member main body 40 of needle point 11a, thereby in order to make the effect support 41 of the closed a pair of protection of flexible 44 c of section, 45c strain extrapolation section 46,47.
It is the member of the roughly tubular made by synthetic resin as the effect support 41 of close mechanism.Effect support 41 has cylindrical portion 61 in the top end side, has accommodation section 62 at base end side.Cylindrical portion 61 forms roughly cylindric.The overall dimensions of cylindrical portion 61 is defined as the guard member spatial accommodation 32 that can be contained in outer pin pedestal 14, and guard member spatial accommodation 32 is moved on axis direction.Again, be formed with pair of notches 61a, 61b on the top end part of cylindrical portion 61, pair of notches 61a, 61b configure across equal intervals on Zhou Fangxiang.On the interior perimembranous of pin pedestal 14, be formed with respectively sticking department 14d on the position of corresponding pair of notches 61a, 61b outside again.Sticking department 14d is side-prominent in the radial direction, is embedded in otch 61a, 61b.Thereby by the outer pin pedestal 14 of the chimeric butt of sticking department 14d, the movement of restriction support 41 outside pin 13 sides, the angular displacement around axis of restriction support 41.Be provided with integratedly accommodation section 62 on the cardinal extremity part of the cylindrical portion 61 with such structure.
Again, accommodation section 62 has attachment 65 on its base end part.Attachment 65 is made of four sidewalls, and attachment 65 forms section and is foursquare ring-type.The outside dimension of the interior perimembranous of attachment 65 forms roughly consistent with the overall dimensions of the base plate of guard member main body 40.By means of this, move and extract support 41 from effect in guard member main body 40, make flexible 44 c of section, the 45c of guard member main body 40 pass attachment 65 when interior, the flexible 44c of section, 45c are pressed into (with reference to Fig. 5 and 6) to the inside by attachment 65.By being pressed into, strain occurs so that the flexible 44c of section, 45c are mutually close, the gap 59 between closed a pair of protection section 46,47.Under the state of closure, the cardinal extremity of protection section 46,47 part is outstanding to window 64a, 64b, thereby the tip end portion of a pair of protection section 46,47 makes can't moving separately of a pair of protection section 46,47 relative to butt on than above-mentioned more close direction.By means of this, the mobile protected portion 46 of guard member main body 40,47 cardinal extremity partly limit, thereby guard member main body 40 can't be extracted from effect support 41.
Again, by until this state is extracted guard member main body 40, a pair of claw component 53,54 can break away from from attachment 65.A pair of claw component 53,54 is pressed into and strain to the inside by passing attachment 65, breaks away from and elastic return from attachment 65 by claw component 53,54 integral body.That is to say, by breaking away from from attachment 65, a pair of claw component 53,54 enlarges laterally, stops guard member main body 40 to be back to cylindrical portion 61 sides of effect support 41.As mentioned above, when guard member main body 40 moves in the direction of extracting support 41 from effect, protected main body of the needle point 11a of interior pin 11 40 covers and protected, keeps protected state thereby then can't carry out relative displacement with respect to effect support 41.
＜function of indwelling needle assembly 〉
In the indwelling needle assembly 1 with said structure, aforesaid guard member 4 is contained in guard member spatial accommodation 32 as shown in Figure 3.In guard member 4, dispose guard member main body 40 so that the flexible 44c of section, 45c are outstanding to window 64a, 64b in effect support 41.By means of this, open the gap 59 between a pair of guard member 46,47, the interior pin 11 of inserting two interior cushion through hole 42a, 43a of logical guard member main body 40 passes this gap 59.The top end side of the interior pin 11 that is through like this is outstanding from the cylindrical portion 61 of guard member main body 40 and effect support, inserts in logical outer pin 13 thereby further connect hemostasis rubber 3.Again, the needle point 11a of interior pin 11 is outstanding from the top end of outer pin 13, and medical personnel can make this outstanding needle point 11a puncture vessel.In addition, the cap section 21 of interior pin pedestal 12 is configured to butt or near the base plate 42 of guard member main body 40.By means of this, limiting protecting spare main body 40 is to the movement of extracting direction, thereby prevents that guard member main body 40 moves and closed a pair of guard member 46,47 before processing.
Make when confirming blood back after indwelling needle assembly 1 puncture vessel, medical personnel extract for the interior pin 11 that will be inserted through outer pin 13 that begins to infuse or take a blood sample.When extracting interior pin 11, the needle point 11a of interior pin 11 is contained in outer pin 13.So, thereby the needle point 11a of interior pin 11 extracts the inner space of passing through outer pin pedestal 14 in outer pin 13, arrive hemostasis rubber 3.When extracting the needle point 11a of interior pin 11 from hemostasis rubber 3, thus part elastic return through hole 30 obturations on every side of the through hole 30 that as shown in Figure 5 and Figure 6, pin 11 passes through.Therefore, even extract interior pin 11 from hemostasis rubber 3, can prevent that also medicinal liquid or blood pressure from leaking to the outside in the space internally by through hole.Again, because hemostasis rubber 3 is crimped on interior pin 11, by wiping, the blood that can prevent from being attached to needle point 11a is attached on medical personnel's etc. the third party blood utilization hemostasis rubber 3 that adheres on the needle point 11a of pin 11 in therefore when puncture when extracting.
When extracting interior pin 11 as mentioned above from hemostasis rubber 3, if being tilted, extracts by interior pin 11, thereby through hole 30 enlarges the part generation plastic deformation on every side of through hole 30, even also may be because through hole 30 can't inaccessible flow out medicinal liquid or blood after extracting.But in indwelling needle assembly 1, interior pin 11 passes two interior cushion through hole 42a, 43a of guard member main body 40 as mentioned above, and guard member main body 40 is held on outer pin pedestal 14 by 41, support of effect.Therefore, interior pin 11 is by the movement of two interior cushion through hole 42a, 43a restriction radial directions, and the part of the perforation through hole 30 of interior pin 11 moves along axis L2.By means of this, even medical personnel make interior pin pedestal 12 extract at a slant with respect to axis L2, thereby interior pin 11 also roughly moves the part of the perforation through hole 30 of interior pin 11 by interior cushion through hole 42a, 43a support as the crow flies along axis L2.By means of this, no matter medical personnel extract the direction of interior pin pedestal 12, interior pin 11 roughly can be extracted from hemostasis rubber 3 as the crow flies along axis direction.Therefore, extract the through hole 30 that interior pin 11 can not enlarge hemostasis rubber 3, in the time of can preventing from extracting because through hole 30 can't inaccessible flow out medicinal liquid or blood.By means of this, thereby can prevent that wound that is attached to the third party that the blood that flows out is direct or indirect etc. from making the third party disease occur infecting.
Again, due to two interior cushion through hole 42a, 43a on axis direction across arranged spaced, therefore pin 11 in supporting by two interior cushion through hole 42a, 43a when not extracting interior pin pedestal 12 along axis L2 can reduce the power that interior pin 11 is expanded through holes.By means of this, plastic deformation occurs in the rubber 3 that can further suppress to stop blooding.
When further extracting interior pin 11, the needle point 11a of interior pin 11 enters between a pair of protection section 46,47 of guard member main body 40, and then junction surface 11b is engaged in base plate 42.And when further extracting interior pin 11 from outer pin pedestal 14, along with interior pin 11 guard member main bodys 40 in the interior movement of effect support 41.By like this, a pair of flexible 44c of section, the 45c of guard member main body 40 is pressed into the inboard by the effect support, the gap 59 between closed a pair of protection section 46,47.By means of this, in covering by a pair of protection section 46,47, the needle point 11a of pins 11 protects.Owing to only just protecting its needle point 11a by extracting interior pin 11 as mentioned above, it is easy therefore protecting operation.
When further extracting interior pin 11 thereafter, then a pair of claw component 53 of guard member main body 40,54 breaks away from from effect support 41 and enlarges, and can stop guard member main body 40 to be back to cylindrical portion 61 places of effect support 41.Approximately meanwhile, hang on effect support 41 from the outstanding part of window 64a, the 64b of protection section 46,47, effect support 41 moves along with guard member main body 40.By means of this, the needle point 11a of pins 11 in guard member main body 40 covers and protect and the state in being contained in effect support 41 under along with interior pin 11 moves, keep this state to take out from the slotting port 24c of pedestal.And medical personnel are at the device that is connected in advance before the operation of puncturing on joint 27, after this to should flow through medicinal liquid by device, or take blood.
Protected main body of the needle point 11a of the interior pin 11 that is removed 40 covers and protects, and this guard member main body 40 is further covered by effect support 41.That is, the needle point 11a of interior pin 11 is protected by Double mulch, can prevent the exposure of needle point 11a.By means of this, can be because finger of waste treatment personnel's of doctor, nurse or pin etc. the third party etc. not be stung by needle point 11a, cause the third party and infect disease by being attached to blood on needle point 11a.Again; the guard member main body 40 of protection needle point 11a remains a pair of claw component 53,54 and breaks away from from effect support 41; and on effect support 41, restriction is with respect to the relative displacement of effect support 41 by a pair of protection section 46,47 is hung over, and the part of its tip end portion side is contained in the state in effect support 41.The needle point 11a that therefore, can prevent interior pin 11 gives prominence to from guard member main body 40 again.
In addition, outer pin pedestal 14 has flexible pipe joint portion 25, can connect the joint 27 that connects by flexible pipe 26 in advance on this flexible pipe joint portion 25 before the operation of puncturing with infusion set or blood-taking device.Therefore, can make infusion set or blood-taking device be connected in advance flexible pipe joint portion 25 in sterilizing room etc., thereby can further suppress to be attached to the quantity of antibacterial on indwelling needle assembly 1 etc.Again, the situation that infusion set or blood-taking device are installed from the slotting logical hemostasis rubber 3 in the tip (chip) (not shown) of the syringe of extracting the rear infusion set of interior pin 11 or blood-taking device is different, and medicinal liquid or blood do not spill from hemostasis rubber 3 when mounted.Therefore, thus can prevent that medicinal liquid or blood etc. are attached to the third party's wound etc. and cause and infect disease.
In the indwelling needle assembly 1 that consists of as mentioned above, the first interior cushion through hole 42a that engages with junction surface 11b is formed at than the second more close axis direction base end part of interior cushion through hole 43a side.Therefore, junction surface 11b can be from the needle point 11a of interior pin 11 away to the base end part side, and can shorten from the length of the outstanding interior pin 11 of the second interior cushion through hole 43a.By means of this, the formation of the junction surface 11b in interior pin 11 becomes easily, can shorten the length of guard member main body 40.
＜about other examples 〉
In the indwelling needle assembly 1 of this example, effect support 41 has cylindrical portion 61 and accommodation section 62, but also can be only by accommodation section 62 or only consisted of by attachment 65.Again, guard member main body 40 forms by with respect to the relative displacement of effect support 41 and closed structure, but also not necessarily must have such structure.For example, also can be formed on a pair of guard member 46,47 and closed structure of the interior manual mobile guard member main body 40 of outer pin pedestal 14.
Again, guard member main body 40 is not limited to said structure, gets final product so long as can cover the such structure of needle point 11a of interior pin 11.At this moment, the structure that has at least the space on the extended line of the needle point 11a of pin 11 in covering get final product, not necessarily needs as baffle 49 from side covering needle point 11a.
In addition, adopt hemostasis rubber 3 as the containment member between block liquid space 31 and guard member spatial accommodation 32, but the such middle real roughly cylindrical member of rubber 3 that is not limited to stop blooding also can use valve etc.
Again, in the indwelling needle assembly 1 of this example, being formed with two interior cushion through hole 42a, 43a on guard member main body 40, but not necessarily needing two, can be also one.Say on the contrary it, at interior cushion through hole 42a, the 43a that also can be formed with on guard member main body 40 more than three.
Claims (4)
1. indwelling needle assembly is characterized in that possessing:
The interior pin that has sharp-pointed needle point in tip end portion;
Be arranged at the interior pin pedestal of the base end part side of described interior pin;
Insert the outer pin of the hollow that is connected with described interior pin;
Insert the outer pin pedestal that is connected with described interior pin and forms the inner space with outer cushion port and the slotting port of pedestal;
Be arranged at described inner space, cover the tip end portion of described interior pin and the guard member protected from described outer pin pedestal when the mobile described interior pin of the direction of extracting; And
Be arranged in described inner space the containment member in the space between more close described outer cushion port side, the described outer cushion port of sealing and the slotting port of described pedestal than described guard member;
Described outer cushion port is arranged at the base end part of described outer pin,
Described pedestal is inserted port described interior pin pedestal releasably is installed,
Described outer pin pedestal has to be formed at from described outer cushion port and described pedestal inserts port different position, and is connected in the delivery port than the part of the more close described outer cushion port side of the described containment member of described inner space,
Described interior pin connects described containment member,
Thereby described containment member forms the through hole elastic return that described interior pin is connected and makes its inaccessible structure,
Described guard member has the close mechanism of guard member main body to be opened/closed, closed described guard member main body and inserts the interior cushion through hole that is connected with described interior pin,
Described guard member main body forms under open mode by described interior pin and connects, and covers the tip end portion of the described pin that is positioned at the guard member main body and the structure protected under closure state,
Described close mechanism forms under state in the tip end portion of described interior pin is inserted described guard member main body, the structure of closed described guard member main body when the mobile described guard member main body of the direction of extracting from described outer pin pedestal.
2. indwelling needle assembly according to claim 1, is characterized in that,
Described guard member has two described interior cushion through holes,
Described two interior cushion through holes on described direction of extracting across arranged spaced.
3. indwelling needle assembly according to claim 2, is characterized in that,
Described interior pin is outstanding laterally near the tip end portion of the outer peripheral face of described interior pin, and has the junction surface, and when moving described interior pin on described direction of extracting, described junction surface engages with described interior cushion through hole of the side,
Thereby described guard member main body forms by described junction surface and be engaged in described interior cushion through hole to join in the mobile structure of the direction of extracting with described interior pin from described outer pin pedestal.
4. indwelling needle assembly according to claim 3, is characterized in that,
A described side's interior cushion through hole is positioned at the base end part side than the opposing party's the more close described pin of cushion through hole,
A described side's interior cushion through hole has the aperture less than the external diameter at described junction surface,
Described the opposing party's interior cushion through hole has the aperture larger than the external diameter at described junction surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-106732 | 2012-05-08 | ||
| JP2012106732A JP2013233247A (en) | 2012-05-08 | 2012-05-08 | Indwelling needle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203263936U true CN203263936U (en) | 2013-11-06 |
Family
ID=49494439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320196543 Expired - Lifetime CN203263936U (en) | 2012-05-08 | 2013-04-18 | Remaining needle component |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2013233247A (en) |
| CN (1) | CN203263936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111132719A (en) * | 2017-07-19 | 2020-05-08 | 贝克顿·迪金森公司 | Extension piece for accommodating probe or intravenous catheter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6724645B2 (en) * | 2016-08-10 | 2020-07-15 | ニプロ株式会社 | Indwelling needle assembly |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES269841Y (en) * | 1980-06-10 | 1984-01-16 | H.G. Wallace Ltd. | IMPROVED TWO-WAY INTRAVASCULAR DEVICE TO PROVIDE LIQUIDS TO PATIENTS OR TO EXTRACT AND MONITOR BLOOD. |
| US7798994B2 (en) * | 2005-11-15 | 2010-09-21 | Becton, Dickinson And Company | Needle shield to septum interconnect |
| JPWO2009123025A1 (en) * | 2008-03-31 | 2011-07-28 | テルモ株式会社 | Indwelling needle assembly |
| WO2010038471A1 (en) * | 2008-10-03 | 2010-04-08 | 二プロ株式会社 | Needle point protector and indwelling needle assembly |
| JP5136855B2 (en) * | 2008-10-03 | 2013-02-06 | ニプロ株式会社 | Needle tip protector and indwelling needle assembly |
| JP5322023B2 (en) * | 2008-10-03 | 2013-10-23 | ニプロ株式会社 | Needle tip protector and indwelling needle assembly |
| JP5321957B2 (en) * | 2008-10-03 | 2013-10-23 | ニプロ株式会社 | Indwelling needle assembly |
| US9011388B2 (en) * | 2010-06-04 | 2015-04-21 | Smiths Medical Asd, Inc. | Passive safety portal device |
-
2012
- 2012-05-08 JP JP2012106732A patent/JP2013233247A/en active Pending
-
2013
- 2013-04-18 CN CN 201320196543 patent/CN203263936U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111132719A (en) * | 2017-07-19 | 2020-05-08 | 贝克顿·迪金森公司 | Extension piece for accommodating probe or intravenous catheter |
| CN111132719B (en) * | 2017-07-19 | 2022-07-05 | 贝克顿·迪金森公司 | Extension piece for accommodating probe or intravenous catheter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013233247A (en) | 2013-11-21 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
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| CX01 | Expiry of patent term |