CN100548393C - The safety shield that is used for medical needle - Google Patents
The safety shield that is used for medical needle Download PDFInfo
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- CN100548393C CN100548393C CNB2003801028292A CN200380102829A CN100548393C CN 100548393 C CN100548393 C CN 100548393C CN B2003801028292 A CNB2003801028292 A CN B2003801028292A CN 200380102829 A CN200380102829 A CN 200380102829A CN 100548393 C CN100548393 C CN 100548393C
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- medical needle
- needle shield
- engagement member
- protector
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Abstract
A kind of medical needle shield comprises and can extend to extended position so that the protector (1) of the far-end of anesthesia needle (6) from retracted position.Engagement member (5) is arranged in the protector (1) and limits the composition surface (22) that forms opening (21), and open construction becomes to slide between retracted position and extended position holds pin (6).Engagement member (5) is included in and slides that one or more resistances of joint pin (6) produce members (26) when holding pin (6), so that and pin (6) generation resistance.Resistance helps engagement member (5) to rotate with respect to the longitudinal axis of pin (6), makes composition surface (2) joint pin (6), so that prevent the slip of pin (6) on the extended position of protector (1).Engagement member (5) also comprises the keeper (14) that therefrom extends, and makes and keeper (14) joint pin (6) rotated so that prevent engagement member (5) before extended position.Protector (1) also comprises can unclamp the plug keeper (14A) that is connected on the conduit plug (4).
Description
Technical field
The present invention relates in general to a kind of safety shield that is used for medical needle, and relates in particular to the safety shield of the needle point of protection medical needle.
Background technology
With unintentionally by the relevant problem of pricking wound in blood sampling, dermal drug injection and to relate in the field of other medical procedure that uses medical needle be known.Because worry that now aids infection, hepatitis or other serious blood-borne pathogens infect, very big attention concentrates on by on the pricking wound problem.
The process need doctor who takes out pin from the patient uses a hands to exert pressure at the wound site of pin extraction, extracts needle device out with the another hands simultaneously.The common practice of doctor is the priority treatment wound, rather than how to handle pin.Under the situation of the conventional needle device that does not have safety shield, this priority has another device of needle container or safe handling near needing, and does not leave the patient.Enough concerns are provided and follow the interference that safety code can be subjected to the patient body state and the mental status simultaneously, for example in fever clinic and mental hospital.In these cases, be difficult to suitably handle used pin, and look after the patient simultaneously.
With pin operation with handle the many devices that are used for preventing by the pin accidental puncture of relevant general knowledge and historical formation.The problem of existing safety device is because its parts complexity and quantity are many, uses difficulty and cost height.
Sheaths such as other known device employing is spring-actuated, flexible, pivot.But the defective of these devices is malfunctioning or is difficult to activate.Another defective of existing apparatus be to be used for the parts complexity and quantity many, the manufacturing cost height.Therefore, these prior-art devices can not be protected medical needle device fully reliably so that the danger of protecting from infection.
Therefore, for the pin safety device, need provide a kind of satisfied more solution, so that overcome the defective and the shortcoming of prior art.Therefore, be desirable to provide a kind of more abundant and reliable medical needle shield, this device adopts the safety shield that slides along medical needle, so that prevent to be exposed to the danger of needle point.This needle protection device should make things convenient for and move reliably so that the needle point of protection syringe.
Summary of the invention
Therefore, the present invention satisfies the needs of medical needle shield, and after pin used, this device was effectively also protected the needle point of medical needle at low cost.
According to the present invention, a kind of medical needle shield is provided, comprising: can extend to extended position so that the protector of the far-end of anesthesia needle from retracted position; Be arranged in the engagement member that also limits the composition surface that forms opening in the protector, open construction becomes to slide between retracted position and extended position holds pin; Engagement member is included in and slides that one or more resistances of joint pin produce members when holding pin, so that and pin produces resistance, resistance and protector help engagement member to rotate with respect to the longitudinal axis of pin, make the composition surface joint pin, so that on the extended position of protector, prevent the slip of pin; Engagement member also comprises the keeper that therefrom extends, and makes and the keeper joint pin rotated so that prevent engagement member before extended position; And the plug keeper is configured to engage the conduit plug.
According to the present invention, a kind of medical needle shield also is provided, comprising: can extend to extended position so that the protector of the far-end of anesthesia needle from retracted position; Be arranged in the protector and be included in the engagement member of the opening that holds pin of sliding between retracted position and the extended position; Engagement member limits by the frictional resistance between resistance generator and the pin and helps the resistance generator that engagement member rotates with respect to the longitudinal axis of pin and be used for joint pin so that prevent the composition surface device that pin slides on the protector extended position; Engagement member also comprises the keeper device that prevents that engagement member from rotating; And the plug keeper is used for releasably engaging the conduit plug.
According to the present invention, a kind of medical needle shield also is provided, comprising: can extend to extended position so that the protector of the far-end of anesthesia needle from retracted position; Be arranged in the engagement member that also limits the composition surface that forms opening in the protector, engagement member comprises that one or more resistances of joint pin produce member, engagement member also comprises the keeper that therefrom extends, and makes and the keeper joint pin rotated so that prevent engagement member before extended position; And the plug keeper that is configured to engage the conduit plug.
Description of drawings
In conjunction with the accompanying drawings, from the following detailed description of exemplary embodiment, more fully understand above and other feature and advantage of the present invention, in the accompanying drawing:
Fig. 1 is the perspective view according to a specific embodiment of the medical needle shield of the principle of the invention;
Fig. 2 is the cross-sectional perspective view of the described medical needle shield of Fig. 1, and wherein housing parts therefrom separates;
Fig. 3 is the magnification fluoroscopy cutaway view of medical needle shield shown in Figure 2;
Fig. 3 A is the enlarged perspective of another embodiment of medical needle shield shown in Figure 2;
Fig. 3 B is the enlarged perspective of another embodiment of medical needle shield shown in Figure 2;
Fig. 3 C is the enlarged perspective of another embodiment of medical needle shield shown in Figure 2;
Fig. 4 is the magnification fluoroscopy cutaway view of medical needle shield shown in Figure 3;
Fig. 5 is the cross-sectional perspective view of medical needle shield shown in Figure 2 with protector of extension;
Fig. 6 is the enlarged perspective of the engagement member of medical needle shield shown in Figure 2;
Fig. 7 is the cross section the selected perspective cut-away schematic view of medical needle shield shown in Figure 3;
Fig. 8 is the perspective view of inner surface of the housing parts of medical needle shield shown in Figure 3;
Fig. 9 is the perspective cut-away schematic view of protector in the medical needle shield shown in Figure 3 of extended position;
Figure 10 is the perspective view of protector in the medical needle shield shown in Figure 1 of extended position;
Figure 11 is the optionally connected enlarged perspective that closes member of medical needle shield shown in Figure 6;
Figure 12 is another optionally connected enlarged perspective that closes member of medical needle shield shown in Figure 3;
Figure 13 is the amplification cross section perspective cut-away schematic view of the selected embodiment of medical needle shield shown in Figure 1;
Figure 14 is the amplification cross section perspective cut-away schematic view of the selected embodiment of medical needle shield shown in Figure 1;
Figure 15 is the amplification cross section perspective cut-away schematic view of another embodiment of medical needle shield shown in Figure 1;
Figure 16 is the amplification cross section perspective cut-away schematic view of another embodiment of medical needle shield shown in Figure 1;
Figure 17 is the cross-sectional perspective view of another embodiment of medical needle shield shown in Figure 1, and its China and foreign countries' roll-shell therefrom separates;
Figure 18 is the amplification cross section perspective cut-away schematic view of the far-end of medical needle shield shown in Figure 17;
Figure 19 is the enlarged perspective of the roll-shell of medical needle shield shown in Figure 17;
Figure 20 is the enlarged perspective of the housing part of medical needle shield shown in Figure 17;
Figure 21 is the cross-sectional perspective view of another embodiment of medical needle shield shown in Figure 17;
Figure 22 is the cross-sectional perspective view of medical needle shield shown in Figure 21, has wherein dismantled the conduit plug;
Figure 23 is the amplification cross-sectional perspective view of another embodiment of medical needle shield shown in Figure 1, and wherein the plug supporting member separately;
Figure 24 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 23, has wherein dismantled the conduit plug;
Figure 25 is the cross section perspective cut-away schematic view of another embodiment of medical needle shield shown in Figure 1, and wherein roll-shell separately;
Figure 26 is the cross-sectional perspective view of another embodiment of medical needle shield shown in Figure 1;
Figure 27 is the perspective cut-away schematic view of medical needle shield shown in Figure 26, and wherein protector is at extended position;
Figure 28 is the enlarged perspective of the engagement member of medical needle shield shown in Figure 26;
Figure 29 is the enlarged perspective of the supporting member of medical needle shield shown in Figure 26;
Figure 30 is the cross section perspective cut-away schematic view of another embodiment of medical needle shield shown in Figure 1;
Figure 31 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 30;
Figure 32 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 30;
Figure 33 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 30;
Figure 34 is the cross-sectional perspective view of another embodiment of medical needle shield shown in Figure 1, and wherein housing parts therefrom separates;
Figure 35 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 34;
Figure 36 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 34;
Figure 37 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 34;
Figure 38 is the cross-sectional perspective view of another embodiment of medical needle shield shown in Figure 1;
Figure 39 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 38 on extended position;
Figure 40 is the cross-sectional perspective view of another embodiment of medical needle shield shown in Figure 1;
Figure 41 is the cross section perspective cut-away schematic view of medical needle shield shown in Figure 40 on extended position;
Figure 42 is the cross-sectional perspective view of another embodiment of medical needle shield shown in Figure 1;
Figure 43 is the sectional view of medical needle shield shown in Figure 42;
Figure 44 is the cross-sectional perspective view of medical needle shield shown in Figure 42 on extended position;
Figure 45 is the sectional view of medical needle shield shown in Figure 44;
Figure 46 is the sectional view of medical needle shield shown in Figure 44;
Figure 47 is the sectional view of another embodiment of medical needle shield shown in Figure 1;
Figure 48 is the sectional view of medical needle shield shown in Figure 47;
Figure 49 is the enlarged perspective of the engagement member of medical needle shield shown in Figure 47;
Figure 50 is the enlarged perspective of the monoblock type friction member of medical needle shield shown in Figure 47;
Figure 51 is the cross-sectional perspective view of medical needle shield shown in Figure 47 at extended position;
Figure 52 is the enlarged perspective of another embodiment of the engagement member of medical needle shield shown in Figure 47.
The specific embodiment
For the medical needle that is used to inject IV fluid, medicine injection or fluid collection, particularly, the exemplary embodiment and the operational approach thereof of medical needle shield is described for being used for syringe and preventing to be exposed to the needle protection device of the danger (comprising) of needle point for example unintentionally by pricking wound.Consider that safety shield for medical needles can be used for the application of medical needle, this application includes but is not limited to fluid injection, fluid collection, conduit, catheter guide.Wire guide device, vertebra and brain adventitia, biopsy, exclusion, dialyse, donate blood, Veress pin, Huber pin, wing (butterfly) pin etc.But be appreciated that the present invention can be widely used in multiple tube pin such as prophylactic agent injection, medicament, treatment and device.Understand that equally also the present invention can be used for collecting the body fluid that comprises those body fluid in venesection, digestive tract, intestinal system, urinary system, the veterinary's correlated process.
In the following description, term " near-end " refers to the structure division near the doctor, and term " far-end " refers to the part away from the doctor.As used herein, " term " main body " refers to the patient who uses medical needle shield to accept injection or therefrom collect blood and/or body fluid, term " doctor " refers to separately and injects, humor collecting, on medical needle shield the installation or removal syringe the individual and can comprise the paraprofessional personnel.
Below explanation comprises the description of medical needle shield, is the method for operating medical needle shield according to the present invention subsequently.Now will at length carry out reference for the exemplary embodiment of the present that is described in the drawings.
With reference now to accompanying drawing,, identical parts indicate similar reference number in institute's drawings attached.Beginning is wherein represented the medical needle shield according to principle of the invention structure with reference to figure 1-10.Medical needle shield comprises and can extend to extended position (Figure 10) so that the protector 1 of the far-end 15 of anesthesia needle 6 from retracted position (Fig. 1).Engagement member 5 is arranged in the protector 1 and limits composition surface 22.Composition surface 22 forms the opening 21 that is configured to hold pin 6.
According to specific medical application and/or doctor's preference, the parts of medical needle shield can be made by the material that is applicable to medical application, for example polymer or metal.Semi-rigid or rigid polymer and for example the elastomeric material of molded medical grade polypropylene can be used for making.But understanding according to the present invention, those of ordinary skills can use other material and the manufacture method that is applicable to assembling and manufacturing.
With reference to figure 3, the flange 4A of conduit plug 4 supports with one heart by the control surface of arranging around the inner surface of housing 2 10.The outer surface 11 of control surface 10 joint flange 4A is so that the therefrom guiding and the extension of supporting tube plug 4.Consider that control surface 10 can engage the other parts of conduit plug 4.
With reference to figure 4-9, engagement member 5 whole formation also comprise that open plate 18, friction member 26 and keeper 14, keeper comprise end detection means 19, pin communicating surface 23 and plug keeper 14A.Open plate 18 has orthogonal general plane structure, and this structure has enough rigidity with generation power, thereby joint pin 6 will be described below.Be susceptible to open plate 18 and can have curved surfaces, waveform etc.According to the needs of application-specific, also can imagine open plate 18 and can have in various degree rigidity.
By the help of pin 6 motions, tilting force causes keeper 14 retroactions so that prevent lever motion or the moment that engagement member 5 rotates.With pin communicating surface 23 on the disengaged of engagement member 5 or the orientation of sliding and pin 6 engage the retroaction tilting force.
End detection means 19 from open plate 18 to remote extension.End detection means 19 can be vertical orientated with respect to the plane that open plate 18 limits.This vertical orientated open plate 18 of helping tilts, so that operate on the joint of engagement member 5 or disengaged orientation.End detection means 19 can be carried out different orientation with respect to open plate 18 as can be seen, and therefrom flexible and extendable.
Pin communicating surface 23 be approximately perpendicular to open plate 18 and with pin 6 aligned directions on extend from end detection means 19.On disengaged or the orientation of sliding, pin communicating surface 23 is aimed at extension with pin 6 almost parallels, so that be slidably engaged with it, as shown in Figure 5.Pin communicating surface 23 joint pins 6, and point to the tilting force of the end detection means 19 of pin 6 by retroaction, keep the disengaged of open plate 18 or the orientation of sliding.The tilting force that is produced by the resistance that describes below engages by friction member 26 and open plate 18 and produces, and cooperates with barrier structure 16 and to cause open plate 18 to move to bonding station.But,, prevent to tilt, as shown in Figure 5 in disengaged or the orientation of sliding because pin communicating surface 23 and pin 6 engage.When pin 6 to proximal retraction, and protector is when remote extension, pin 6 is slidably engaged pin communicating surface 23 continuously, as shown in Figure 5.
Resistance produces between friction member 26 and pin 6.Resistance combines with barrier structure 16 and causes open plate 18 to move to bonding station.Notice that the power that barrier structure 16 produces acts on the direction opposite with resistance.This causes the couple that open plate 18 is moved to bonding station.When pin 6 was thrown off with the engaging of pin communicating surface 23, open plate 18 and keeper 14 moved to bonding station.No longer engage this rotation of retroaction by pin communicating surface 23 places and pin 6.Therefore the open plate 18 that is connected on the keeper 14 tilts to engagement orientations.The rotation of open plate 18 causes composition surface 22 and pin 6 frictional engagement, so that prevent its motion.When being applied on the protector 1 on the either direction of power at axis x along the longitudinal, barrier structure 16,17 causes open plate 18 to move to bonding station.This remains on pin 6 in the protector 1, so that avoid being exposed to the danger of far-end 15.Be susceptible to pin communicating surface 23 and can comprise the fin that engages with pin 6, protuberance, cavity etc., the part and the pin 6 that perhaps are susceptible to pin communicating surface 23 engage.
Also can be susceptible to engagement member 5 and can be configured such that opening 21 does not engage with pin 6, till engaging appearance.In this embodiment, barrier structure 16 and 17 is configured to begin the rotation of engagement member 5, and this moment, the rotation of open plate 18 caused composition surface 22 frictional engagement pins 6, so that prevent its motion.
When pin 6 to proximal direction withdrawal and protector 1 when distal direction extends, as shown in Figure 7, keeper 14 since the tilting force of friction member 26 generations rotate with respect to longitudinal axis x.Plug keeper 14A and plug stria 24 are thrown off, so that unclamp conduit plug 4 from housing 2.The doctor can handle finger pressure tab 5A, so that leave protector 1 to far-end control lead 3.Consider that plug keeper 14A can be with respect to pin communicating surface 23 different orientations.Can consider that also plug stria 24 can differently be provided with size, and be arranged on the periphery of conduit plug 4.Plug stria 24 can comprise tab that keeps together with plug keeper 14A etc.
With reference to figure 7 and 9, handle protector 1, make friction member 26 cause engagement member 5 to rotate with respect to longitudinal axis x.Open plate 18 is rotated away from and the engaging of pin 6, and makes open plate be orientated on less than 90 ° angle [alpha] with respect to longitudinal axis x.Consider that angle [alpha] can be from the either side measurement of open plate 18.
The inclination of engagement member 5 also realizes by the barrier structure 16 and 17 of housing.Barrier structure 16 and 17 and housing parts 8 be formed together, and be arranged to interfere with pin 6. Barrier structure 16,17 is defining surface 16A and 17A respectively, and this helps open plate 18 to be arranged on the engagement orientations.
For example, as shown in Figure 2, protector 1 is at retracted position and pin 6 extends fully.Engagement member 5 and open plate 18 make open plate 18 be approximately perpendicular to longitudinal axis x on disengaged or the orientation of sliding.But barrier structure 16,17 coupling opening plates 18 so as with open plate 18 remain on vertical orientated on. Barrier structure 16,17 also can be between pin 6 extended peroid or is not kept this orientation during joint pin 6.
When pin 6 withdrawals and protector 1 extension, friction member 26 as shown in Figure 7, causes open plate 18 to turn to engagement orientations via producing resistance with being bonded on the engagement member 5 of pin 6. Barrier structure surface 16A and 17A coupling opening plate 18 be so that help it from the vertical orientated engagement orientations that turns to, and makes composition surface 22 joint pins 6.This structure prevents pin 6 motions.
The joint of strengthening engagement member 5 and pin 6 by the friction that produces between composition surface 22 and the pin 6 or engaging force.This frictionally engages within protector and prevents that when extended position pin 6 is with respect to housing 2 axially-movables.Consider that composition surface 22 can comprise sharpened edge so that increase frictional engagement.Also can consider the specific needs of using according to pin, change friction or engaging force by following factor, this factor for example is the thickness, the size from the contact point of barrier structure 16,17 to pin 6 centrages of diameter, the open plate 18 of size, the pin 6 of opening 21 and for any power on the housing 2 of being applied to coefficient of friction opening 21 and the pin 6 up to the point of material failure.
With reference to figure 3A, another selected embodiment of expression engagement member 5 ' (similar with the engagement member 5 of Fig. 6, but do not have friction member 26).Engagement member 5 ' comprises that the resistance of the opening 21 that for example passes through the formation of composition surface 22 (see figure 6)s produces member.Opening 21 helps to be slidably engaged with syringe 6.The frictional resistance of this joint generation and syringe 6.This frictional resistance causes engagement member 5 ' and syringe 6 to move together.On the disengaged of engagement member 5 ' or the orientation of sliding, open plate 18 ' engages barrier structure 16,17, causes the tilting force in the end detection means 19, as mentioned above.
With reference to figure 3B and 3C, the selected embodiment of expression engagement member 5 '.Fig. 3 B represents to have the member 44 of opening 45, and wherein member 44 is arranged on the open plate 18 '.The diameter of opening 45 is less than the diameter of opening 21.Engagement member 5 ' comprises that the resistance of the opening 45 that for example passes through composition surface 46 formation produces member.Opening 45 helps to be slidably engaged with syringe 6.This frictional resistance that causes with syringe 6 that is slidably engaged, and cooperate with barrier structure 16, cause open plate 18 ' to move to bonding station.Fig. 3 C represents to have the member 41 of the element 42 that limits opening 40, wherein on the member 41 arrange openings plates 18 '.Engagement member 5 ' comprises that the resistance of the openings 40 that for example pass through surface 43 formation produces member.Distance between the surface 43 is less than the diameter of opening 21.Surface 43 helps to be slidably engaged with syringe 6.This joint produces and the frictional resistance of syringe 6, and cooperates with barrier structure 16, causes open plate 18 ' to move to bonding station.Consider that member 41 and 44 can be made by for example materials such as polymer, metal, elastomeric material.
With reference to Figure 11 and 12, the selected embodiment of expression engagement member 5.Open plate 18 has the polygon geometric configuration, and end detection means 19 has the component arm 19A that extends on the roughly axis of pin 6 being parallel to.23 horizontal expansions of pin communicating surface are so that the cavity 23A between the bridge joint arm 19A.Engagement member 5 comprises the plug keeper 14A that engages with plug stria 24, with described similar.Friction member 26 is from open plate 18 horizontal expansions.Friction member arm 26A can comprise the plane engagement surface as shown in figure 11 that engages with pin 6, perhaps comprises crooked composition surface shown in Figure 12.
In operation, be arranged to use with describe similar medical needle shield according to the principle of the invention with conduit 3.The parts of medical needle shield make, suitably sterilize or prepare so that storage, transportation and use.
With reference to Fig. 1 and 2, doctor's (not shown) operating grip 13 makes protector 1 at retracted position, and engagement member 5 is in the disengaged or orientation of sliding.Pin 6 extends fully with respect to protector 1, makes conduit 3 arrange around pin 6, and conduit plug 4 and housing 2 releasably are installed together.Finish the process of medical needle shield and conduit 3 uses by the doctor.
With reference to figure 7,9 and 10, when pin 6 left pin communicating surface 23, owing to engaging the tilting force that produces via pin 6 with friction member 26, keeper 14 freely rotated.Open plate 18 turns to the incline direction that is used for by the engagement orientations of barrier structure 16,17 helps with respect to longitudinal axis x from vertical direction, as shown in Figure 9.Open plate 18 turns to angle [alpha] with respect to longitudinal axis x.
Can select among the embodiment, as shown in figure 13, engagement member 5 comprises the separately friction member 26 ' on the proximal lateral that is arranged in open plate 18 and the distal side.Friction member 26 ' is the polymer O shape circle of frictional fit, makes pin 6 slide therein, and via with the engaging of pin 6, provide frictional resistance, with described similar.Friction member 26 ' coupling opening plate 18, and cooperate with barrier structure 16, cause open plate 18 to move to bonding station.Composition surface 22 joint pins 6 are so that prevent the axially-movable of pin 6, as described.Consider that friction member 26 ' can be made by for example polymer, metal etc.
In addition, friction member 26 ' forms and connects or engage two members 26 " integrated member, as shown in figure 14.Member 26 " joint pin 6 and open plate 18 be so that prevent pin 6 axially-movables, and be similar with the description with respect to Figure 13.Being susceptible to opening 21 can cause engagement member 5 to rotate via engage the generation resistance with pin 6, with described similar.Also be susceptible to materials such as example gel, oils and fats and can be used to produce frictional force with pin 6, so that cause engagement member 5 to rotate.
Can select among the embodiment, as shown in figure 15, housing 2 comprises plug supporting member 20.Plug supporting member 20 holds by conduit plug 4 so that advantageously help the detachable installation of conduit plug 4 and protector 1.In addition, as shown in figure 16, the control surface 10 of housing 2 can cut or remove.This structure makes plug supporting member 20 help conduit plug 4 to install with one heart separately.
With reference to figure 17-20, another selected embodiment of expression medical needle shield.Rotatable housing 25 with part 29 is arranged to rotate and sealing protector 1.Roll-shell 25 is installed in the handle 13 and freely rotates with respect to protector 1 and pin 6 on the position of protector 1.Help relatively rotating of roll-shell 25 by the supporting member at opening 27 places and the supporting member that is formed in the roll- shell 25.Axle 31,31A are bearing in respectively on the opening 30,27 rotationally.On engagement orientations, supporting construction supporting roll-shell 25 is with respect to the rotation of protector 1 and pin 6.Supporting member 40 comprises barrier structure 16,17, with described similar.Pin 6 passes barrier structure 16,17, so that relatively wherein slide.Half part of axle 31 is spaced from each other, and makes pin 6 and keeper 14 to arrange wherein.
This structure prevents that protector 1 from rotating around the longitudinal axis of pin 6, makes engagement member 5 undesirably not rotate, and engages with the protection of pin 6 thereby disturb.Therefore, reduced to cause the protector 1 protection structural deformation on the extended position and the probability of damage by manually or carelessly twisting protector 1.The length that is susceptible to opening 27 can increase, and makes that the radial clearance between opening 27 and the pin 6 limits the inclination of protector 1 in roll-shell 25.This structure prevents radially contacting of protector 1 and rotatable housing 25, and can remove forward support.
With reference to Figure 21 and 22, can select among the embodiment, supporting member 40 comprises the thrust flanges 32 that is installed on the pin 6.The corresponding thrust bottom 33 of rotatable housing 25 is configured to support thrust flanges 32, and the motion to axial between control supporting member 40 and the roll-shell 25.Thrust flanges 32 is freely rotated in thrust bottom 33, rotate to help pin 6, and restriction protector 1 tilts in rotatable housing 25.In addition, shown in Figure 23 and 24, rotatable housing 25 comprises plug supporting member 20, with illustrate with respect to Figure 15 similar.In another selected example, as shown in figure 25, the control surface 10 of supporting member 40 can cut or remove, with illustrate with respect to Figure 16 similar.
With reference to figure 26-29, another selected embodiment of expression medical needle safety device.Rotatable housing 25 is arranged to rotate and sealing protector 1.Rotatable housing 25 freely rotates with respect to protector 1 and pin 6 on the extended position of protector 1.Supporting member by opening 27 places is helped relatively rotating of roll- shell 25.Axle 31,31A are bearing on the opening 27 respectively rotationally.On engagement orientations, supporting construction supporting roll-shell 25 is with respect to the rotation of protector 1 and pin 6.Supporting member 40 comprises barrier structure 16,17, with described similar.Pin 6 passes barrier structure 16,17, so that relatively wherein slide.Half part of axle 31 is spaced from each other, and makes pin 6 and keeper 14 to arrange wherein.
This structure prevents that protector 1 from rotating around the longitudinal axis of pin 6, makes engagement member 5 undesirably not rotate, and engages with the protection of pin 6 thereby disturb.Therefore, reduced to cause the protector 1 protection structural deformation on the extended position and the probability of damage by manually or carelessly twisting protector 1.The length that is susceptible to opening 27 can increase, and makes that the radial clearance between opening 27 and the pin 6 limits the inclination of protector 1 in roll-shell 25.This structure prevents radially contacting of protector 1 and rotatable housing 25, and can remove forward support.
With reference to figure 30-33, plug keeper 14A can be hinged on the supporting member 40, for example by hinges or analog.Figure 30 and 31 is illustrated in the protector 1 before starting, and wherein plug keeper 14A comprises and keeper 14 engaging portion, so that plug keeper 14A is remained in the plug stria 24.Protector 1 after Figure 32 and 22 expressions start, the motion of keeper 14 makes part 34 motion plug keeper 14A when wherein starting on protector 1 extended position, and unclamps plug keeper 14A from plug stria 24.
Embodiment shown in Figure 34-37 represents to be hinged on the plug keeper 14A on the housing 2.Protector 1 before Figure 34 and 35 is illustrated in and starts, wherein plug keeper 14A comprise with keeper 14 engaging portion 34 so that plug keeper 14A is remained in the plug stria 24.Protector 1 after Figure 36 and 37 expressions start, wherein the motion when protector 1 keeper 14 when extended position starts makes part 34 move, and unclamps plug keeper 14A from plug stria 24.
Embodiment shown in Figure 38-39 represents to have the protector of the plug keeper 14A that engages with conduit plug 4 via flange 42.Protector 1 before Figure 38 represents to start.Protector 1 after Figure 39 represents to start, wherein the motion when protector 1 keeper 14 when extended position starts makes keeper 14 move, and unclamps plug keeper 14A from flange 42.Keep protector 44 protection plug keeper 14A, it is by mistake moved leave desired location.
With reference to figure 40-41, illustrated embodiment is represented the protector of the plug keeper 14A that engages with conduit plug 4 via flange 42.Figure 40 is illustrated in the protector 1 before starting.Protector 1 after Figure 41 represents to start, wherein the motion when protector 1 keeper 14 when extended position starts makes keeper 14 move, and unclamps plug keeper 14A from flange 42.Keep protector 44 circumferentially to extend so that make plug keeper 14A rotate and protection plug keeper 14A, it is by mistake moved leave desired location around pin 6.
With reference to figure 42-46, another selected embodiment of expression medical needle safety device.Protector 1 before Figure 42 and 43 expressions start, wherein engagement member 46 is arranged in the cavity 54 of sliding component 48.Sliding component 48 holds pin 6, so that slidably hold via the retracted position of protector 1 and the friction between the extended position.End detection means 19 from sliding component 48 to remote extension.Being susceptible to end detection means 19 can be with respect to sliding component 48 different orientation, and can be therefrom flexible and extendable, for example by hinge 52 or analog.Pin communicating surface 23 is extended from end detection means 19.On disengaged or the orientation of sliding, pin communicating surface 23 is slidably engaged pin 6, shown in Figure 42 and 43.Point to the power of the end detection means 19 of pin 6 by retroaction, pin communicating surface 23 joint pins 6 also keep the disengaged of engagement member 46 or slide orientation.Below described engagement member power that end detection means 19 the produces inclined-plane 50 by engagement member 46 that reclines produce.But because the joint of pin communicating surface 23 and pin 6 prevents the joint on disengaged or the orientation of sliding, shown in Figure 42 and 43.When pin 6 to proximal retraction and protector during to remote extension, pin 6 continues to be slidably engaged pin communicating surface 23, shown in Figure 42 and 43.Be susceptible to pin communicating surface 23 and can comprise fin, protuberance, cavity etc., perhaps a part of joint pin 6 of pin communicating surface 23 so that engage with pin 6.
With reference to figure 44-46, at protector 1 at extended position, when pin 6 was thrown off with the engaging of pin communicating surface 23, inclined-plane 50 power that engagement member 46 produces that reclines caused end detection means 19 to move, and make engagement member 46 via the composition surface on the engagement member 46 with juncture contact pin 6.Shown in Figure 45 and 46, when protector along pin 6 during in arbitrary axially-movable, inclined-plane 50 makes engagement member 46 engage with pin 6.
With reference to figure 47-52, another selected embodiment of expression medical needle safety device.Illustrated embodiment is represented rotatable protector, and wherein engagement member 5 rotates around the area supported that is arranged in the cavity 56.Protector 1 before Figure 47 and 48 expressions start.Keeper 14 extends from end detection means 19, and wherein keeper 14 is in the opposite side needle support, and before extended position engagement member 5 is remained on unengaged position at protector.Engagement member 5 is arranged in friction member 26 " in, it forms integrated member so that hold pin 6, holds thereby slide via the retracted position of protector 1 and the friction between the extended position, as shown in figure 50.When pin 6 withdrawals and protector 1 extension, friction member 26 " produce resistance via being bonded on the engagement member 5 with pin 6, shown in Figure 47 and 48, cause engagement member 5 to turn to engagement orientations. Barrier structure surface 16 and 17 engagement members 5 are so that help it to turn to engagement orientations from vertical direction, make composition surface 22 joint pins 6.This structure prevents pin 6 motions.Protector 1 after Figure 51 represents to start, wherein the motion when protector 1 keeper 14 when extended position starts makes keeper 14 move, and plug keeper 14A is unclamped from stria 24.
Figure 52 represents another embodiment of engagement member 5, and engagement member has friction arms 26, so that help engagement member to rotate.Be susceptible to this embodiment that comprises engagement member 5 shown in Figure 25 and can have the intravital barrier structure of the shell of being attached to, embodiment illustrates like that as described.
The present invention of explanation now can different particular forms embody, and does not depart from spirit of the present invention or basic feature.Therefore present embodiment thinks it is exemplary in all respects, does not have limitation, and scope of the present invention limits by claims, and does not limit by above explanation, and all changes in the meaning of claim equivalents and the scope include wherein.
Claims (40)
1. medical needle shield comprises:
Can extend to extended position so that the protector of the far-end of anesthesia needle from retracted position;
Be arranged in the engagement member that also limits the composition surface that forms opening in the protector, open construction becomes to slide between retracted position and extended position holds pin;
Engagement member is included in and slides that one or more resistances of joint pin produce members when holding pin, so that and pin produces resistance, resistance and protector help engagement member to rotate with respect to the longitudinal axis of pin, make the composition surface joint pin, so that on the extended position of protector, prevent the slip of pin;
Engagement member also comprises the keeper that therefrom extends, and makes and the keeper joint pin rotated so that prevent engagement member before extended position; And
The plug keeper is configured to engage the conduit plug.
2. medical needle shield as claimed in claim 1 is characterized in that engagement member comprises the open plate of general plane, and open plate comprises the composition surface that forms opening.
3. medical needle shield as claimed in claim 2 is characterized in that, owing to keeper before protector is positioned at extended position and pin joint, open plate is with respect to the longitudinal axis approximate vertical of pin.
4. medical needle shield as claimed in claim 1 is characterized in that, keeper comprises from the first of engagement member extension and the second portion that extends from first.
5. medical needle shield as claimed in claim 4 is characterized in that, because keeper and pin engage, first extends from engagement member with the pin almost parallel with aiming at.
6. medical needle shield as claimed in claim 4 is characterized in that, second portion is with respect to the substantial transverse extension of the longitudinal axis of pin, and is configured to engage with pin.
7. medical needle shield as claimed in claim 6 is characterized in that, second portion has and is used for the general plane part that engages with pin.
8. medical needle shield as claimed in claim 1 is characterized in that, at least one resistance produces the opening that member comprises engagement member, makes the opening joint pin so that and pin produce resistance.
9. medical needle shield as claimed in claim 1 is characterized in that, at least one resistance produces member and comprises a pair of friction member, and joint pin and pin produce resistance thereby friction member extends.
10. medical needle shield as claimed in claim 1 is characterized in that, at least one resistance produces member and comprises at least one friction member of arranging on the pin.
11. medical needle shield as claimed in claim 1 is characterized in that, at least one resistance produces member and engagement member forms integral body.
12. medical needle shield as claimed in claim 1 is characterized in that, at least one resistance produces member and comprises the material with opening littler than the opening of engagement member.
13. medical needle shield as claimed in claim 12 is characterized in that, this material is formed by elastomeric material.
14. medical needle shield as claimed in claim 1 is characterized in that, at least one resistance produces member and comprises the unitary friction element of separating of arranging on the medical needle.
15. medical needle shield as claimed in claim 14 is characterized in that, unitary friction element comprises the friction element of inclination engagement member, and the aperture arrangement of engagement member is between friction element.
16. medical needle shield as claimed in claim 1 is characterized in that, at least one resistance produces member and comprises and arrange on the pin that so that the separately friction element of inclination engagement member, the aperture arrangement of engagement member is between friction element.
17. medical needle shield as claimed in claim 1 is characterized in that, protector comprises the housing of qualification from least one barrier structure of its inner surface extension, and at least one barrier structure engages with engagement member so that oppress engagement member to engagement orientations.
18. medical needle shield as claimed in claim 1, it is characterized in that engagement member rotates so that prevent pin with respect to disengaged orientation and the composition surface joint pin that engagement member slides at pin with respect to the longitudinal axis of pin between the engagement orientations that slides on the protector extended position.
19. medical needle shield as claimed in claim 1 is characterized in that, also comprises being used for around the rotatable in relative rotation housing of pin.
20. medical needle shield as claimed in claim 19 is characterized in that, protector is supported so that relatively rotate via rotatable housing by at least one supporting member.
21. medical needle shield as claimed in claim 20 is characterized in that, the plug keeper is arranged at least one supporting member.
22. medical needle shield as claimed in claim 20 is characterized in that, at least one supporting member limits at least one barrier structure that extends from its inner surface, and at least one barrier structure engages with engagement member, so that the compressing engagement member is to engagement orientations.
23. medical needle shield as claimed in claim 1 is characterized in that, the plug keeper is arranged on the housing.
24. medical needle shield as claimed in claim 1 is characterized in that, keeper and plug keeper are whole to be formed, and makes that plug keeps extending from keeper.
25. medical needle shield as claimed in claim 1 is characterized in that, also comprises extending the device of protector to the far-end of pin.
26. medical needle shield as claimed in claim 1 is characterized in that, also comprises the keeper protector, so that protection plug keeper does not make it be not intended to motion and leaves desired location.
27. a medical needle shield comprises:
Can extend to extended position so that the protector of the far-end of anesthesia needle from retracted position;
Be arranged in the protector and be included in the engagement member of the opening that holds pin of sliding between retracted position and the extended position;
Engagement member limits by the frictional resistance between resistance generator and the pin and helps the resistance generator that engagement member rotates with respect to the longitudinal axis of pin and be used for joint pin so that prevent the composition surface device that pin slides on the protector extended position;
Engagement member also comprises the keeper device that prevents that engagement member from rotating; And
The plug keeper is used for releasably engaging the conduit plug.
28. medical needle shield as claimed in claim 27, it is characterized in that engagement member can rotate between the engagement orientations that slides on the protector extended position so that prevent pin with respect to disengaged orientation and the composition surface joint pin that engagement member slides at pin with respect to the longitudinal axis of pin.
29. medical needle shield as claimed in claim 27 is characterized in that, also comprises being used for around the rotatable in relative rotation housing of pin.
30. medical needle shield as claimed in claim 29 is characterized in that, protector is supported so that relatively rotate via rotatable housing by at least one supporting member.
31. medical needle shield as claimed in claim 30 is characterized in that, the plug keeper is arranged at least one supporting member.
32. medical needle shield as claimed in claim 30 is characterized in that, at least one supporting member limits at least one barrier structure that extends from its inner surface, and at least one barrier structure engages with engagement member, so that the compressing engagement member is to engagement orientations.
33. medical needle shield as claimed in claim 27 is characterized in that, the plug keeper is arranged on the housing.
34. medical needle shield as claimed in claim 27 is characterized in that, at least one resistance produces member and comprises at least one friction member of arranging on the pin.
35. medical needle shield as claimed in claim 27 is characterized in that, at least one resistance produces member and engagement member forms integral body.
36. medical needle shield as claimed in claim 27 is characterized in that, at least one resistance produces member and comprises the unitary friction element of separating of arranging on the medical needle.
37. medical needle shield as claimed in claim 36 is characterized in that, unitary friction element comprises the friction element of inclination engagement member, and the aperture arrangement of engagement member is between friction element.
38. medical needle shield as claimed in claim 27 is characterized in that, at least one resistance produces member and comprises and arrange on the pin that so that the separately friction element of inclination engagement member, the aperture arrangement of engagement member is between friction element.
39. medical needle shield as claimed in claim 27 is characterized in that, also comprises extending the device of protector to the far-end of pin.
40. a medical needle shield comprises:
Can extend to extended position so that the protector of the far-end of anesthesia needle from retracted position;
Be arranged in the engagement member that also limits the composition surface that forms opening in the protector, engagement member comprises that one or more resistances of joint pin produce member, engagement member also comprises the keeper that therefrom extends, and makes and the keeper joint pin rotated so that prevent engagement member before extended position; And
Be configured to engage the plug keeper of conduit plug.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US42465502P | 2002-11-07 | 2002-11-07 | |
| US60/424,655 | 2002-11-07 | ||
| US10/660,083 | 2003-09-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1711115A CN1711115A (en) | 2005-12-21 |
| CN100548393C true CN100548393C (en) | 2009-10-14 |
Family
ID=35707181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801028292A Expired - Lifetime CN100548393C (en) | 2002-11-07 | 2003-10-15 | The safety shield that is used for medical needle |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN100548393C (en) |
| AT (1) | ATE462465T1 (en) |
| DE (1) | DE60331944D1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5576289B2 (en) * | 2007-11-21 | 2014-08-20 | ベクトン・ディキンソン・アンド・カンパニー | Needle safety device |
| WO2012075421A1 (en) * | 2010-12-02 | 2012-06-07 | Erskine Medical Llc | Release mechanism for use with needle shielding devices |
| DK2776110T3 (en) * | 2011-11-08 | 2015-12-14 | Poly Medicure Ltd | Intravenous catheter device |
| JP6028037B2 (en) * | 2012-10-05 | 2016-11-16 | メディキット株式会社 | Medical safety needle that prevents re-exposure of the needle tip |
-
2003
- 2003-10-15 CN CNB2003801028292A patent/CN100548393C/en not_active Expired - Lifetime
- 2003-10-15 DE DE60331944T patent/DE60331944D1/en not_active Expired - Lifetime
- 2003-10-15 AT AT03811231T patent/ATE462465T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE462465T1 (en) | 2010-04-15 |
| DE60331944D1 (en) | 2010-05-12 |
| CN1711115A (en) | 2005-12-21 |
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