CN100571796C - Resettable safety shield for medical needles - Google Patents
Resettable safety shield for medical needles Download PDFInfo
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- CN100571796C CN100571796C CNB2004800346447A CN200480034644A CN100571796C CN 100571796 C CN100571796 C CN 100571796C CN B2004800346447 A CNB2004800346447 A CN B2004800346447A CN 200480034644 A CN200480034644 A CN 200480034644A CN 100571796 C CN100571796 C CN 100571796C
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Abstract
The invention provides a kind of medical needle protective cover, this medical needle protective cover comprises needle stand (104), and this needle stand (104) comprises the outer needle guard (103) from its extension.Interior pin (106) is according to being provided with respect to the mode that outer needle guard (103) slides.At least one protective cover (101) can extend to extended position with the distal portion sealing cover with pin (101) in above-mentioned from reclaiming the position.Above-mentioned protective cover (101) comprises link (105), this link (105) is arranged at the inside of protective cover (101) and determines connection surface (122), and this connection surface (122) forms the hole (138) that constitutes according to the mode of admitting interior pin (106) slidably.Above-mentioned link (105) comprises the link surface (107) that resets, and aliging with the surface that resets (108) engaging in this link surface (107) that resets, thereby allows reusing of needle protection device.
Description
Technical field
The present invention relates generally to the safty shield that medical needle is used, more particularly, the present invention relates to protect the safty shield of the needle point of medical needle.
Background technology
Adopt the blood sampling of medical needle, via the medicine injection of skin, other the field of medical procedure, the problem relevant with thrusting of unexpected pin is well-known.Because the current sensitivity that presents of the pathogen that AIDS, hepatitis and other serious blood cause, the problem of thrusting of pin is subjected to people and pays close attention to significantly.
The program of taking off pin from the patient generally requires the full-time staff to adopt a hands to exert pressure in the wound that is about to be drawn out of pin, by the another hands, takes off needle device simultaneously.Give the concern of the disposal of pin relatively, cure mainly the full-time staff and can more preferentially look after the patient, this also is the common practice.Do not have under the situation of safty shield at typical needle device, above-mentioned preferential care to the patient perhaps requires a sharp-pointed container within reach easily, perhaps carries out another device of safe disposal under the situation that does not break away from the patient.Normally patient's body condition and the mental status match to provide enough care to observe security procedure simultaneously to the patient, such as, in burn center and psychosis ward, under such condition, the full-time staff is difficult to suitably dispose exhausted pin when looking after the patient.
General knowledge and the history relevant with handling problems with the concern of pin have expedited the emergence of many devices of being needled into unexpectedly of being used to prevent.Because its complexity and number of spare parts aspect, the problem of present safety device comprises the difficulty and the higher cost of use.
That other known devices adopts is spring driven, flexible, the sheath of rotation etc.But the shortcoming of these devices is not drive, or is difficult to drive.Because the complexity and the quantity of part, the shortcoming of this device also comprises the manufacturing cost that it is higher.Therefore, these type conventional device probably can't be fully and reliably the shield medical needle device to prevent presenting of hazardness.
Therefore, need be provided for the more gratifying solution of pin safety device by overcoming above-mentioned shortcoming of the prior art and unfavorable.Therefore, need provide medical needle shield more fully and reliably, it adopts and can present with the hazardness that prevents needle point along the safty shield that medical needle is slided.Following safty shield preferably is provided, and it can be reset to allow reusing of some needle device safely.Such Needle shield device should easily and reliably move to get up with the needle point sealing cover with needle tubing.
Summary of the invention
Therefore, the present invention sets about satisfying the needs of following medical needle protective cover, and this device effectively and is at low cost protected the needle point of the medical needle after the use.The present invention overcomes disadvantages associated in the prior art and unfavorable.More particularly, apparatus and method of the present invention constitute the major progress in safety needle device field.
In a particular embodiment, according to principle of the present invention, provide a kind of medical needle protective cover.This medical needle shield comprises protective cover, and it can reach the distal portion of extended position with the sealing cover pin from reclaiming the position; Link is arranged at the inside of this protective cover and determines to connect the surface, and this connection surface forms the hole that constitutes according to the mode that can admit this pin between above-mentioned recovery position and extended position slidably; Above-mentioned link comprises at least one pulling force production part, and these parts constitute according to the mode that can be sliding engaged to above-mentioned pin between recovery position and extended position, thereby above-mentioned at least one pulling force production part engages above-mentioned pin to produce pulling force on pin; As described later, above-mentioned pulling force makes the longitudinal axis of the relative pin of link and rotates, thereby the above-mentioned pin of above-mentioned connection surface engagement is to prevent the slip at the above-mentioned pin of the extended position of above-mentioned protective cover; Above-mentioned link also comprises the keeper from its extension, and above-mentioned keeper can engage to prevent the rotation of link with above-mentioned pin.
In another specific embodiment, the medical needle protective cover comprises needle stand, and this needle stand has the outer needle guard that extends to distal portion from it; Interior pin according to mutually externally needle guard slidably mode be provided with.At least one protective cover may extend into the top of extended position with the sealing cover pin from reclaiming the position; Above-mentioned protective cover comprises link, and this link is arranged at the inside of protective cover and determines the connection surface, and this connects the surface and forms the hole, and this hole is provided in and admits above-mentioned interior pin between above-mentioned recovery position and the extended position slidably.
Above-mentioned link comprises at least one pulling force production part, admit slidably above-mentioned in during the pin, this part bonding should in pin so that pin in above-mentioned is produced pulling force.Above-mentioned pulling force makes the above-mentioned link internal longitudinal axis of pin and rotating mutually, thus above-mentioned connection surface engagement above-mentioned in pin with prevent above-mentioned in pin move slidably at the extended position of above-mentioned protective cover; Above-mentioned link also comprises the pin connection surface from its extension, thereby above-mentioned pin connects the surface and above-mentioned interior pin engages to prevent the rotation of link.Thereby keeper laterally releasably engages with needle stand from above-mentioned link extension.
Between disconnected orientation and connection orientation, above-mentioned link can be above-mentioned relatively in the longitudinal axis rotation of pin; In above-mentioned disconnected orientation, the above-mentioned interior above-mentioned relatively link of pin slidably; In above-mentioned connection orientation, pin moved on the extended position of above-mentioned at least one protective cover slidably to prevent above-mentioned interior pin in above-mentioned connection surface engagement was above-mentioned; Above-mentioned link can comprise one or more arched arms, and this arm extends outwardly into pin and connects the surface.
Pin can be connected with the handle that it is handled in above-mentioned; Above-mentioned needle stand can form the needle stand groove that constitutes according to the mode of admitting above-mentioned keeper; Above-mentioned needle stand can the dismounting mode be installed the shell of at least one protective cover.Above-mentioned medical needle protective cover also can comprise a plurality of protective covers.
Above-mentioned at least one pulling force production part can form the chamber, aligns with above-mentioned hole substantially in this chamber; This chamber constitutes according to the mode of admitting above-mentioned pin slidably, thereby above-mentioned pin is produced pulling force; Above-mentioned link can comprise planar substantially orifice plate, and this orifice plate comprises the connection surface that forms above-mentioned hole; Above-mentioned at least one pulling force production part can comprise a pair of arm that extends from orifice plate; This arm can have the end with the isolated bending of orifice plate; This arm can comprise flexible parts.
Above-mentioned protective cover can comprise shell, and this shell forms at least one stop member that extends from its inner surface; This at least one stop member can engage with above-mentioned link to order about above-mentioned link and shift to connection orientation; Above-mentioned orifice plate moves axially to engage with above-mentioned at least one stop member, and this at least one stop member makes above-mentioned link rotate to connection orientation.
Link can comprise the surface that resets of laterally extending from above-mentioned link.Above-mentioned needle stand also can comprise the surface that resets, and this surface that resets is according to when above-mentioned protective cover shell engages with above-mentioned needle stand with one heart, aligns with it with the link of the link that the drives surperficial mode that contacts that resets; The above-mentioned surface that resets make above-mentioned link reset the surface with the pin composition surface bend to above-mentioned in the position of wire surface top, order about above-mentioned link and move to the slip orientation from connection orientation; Simultaneously, the contact between the surface because reset surface and link reset, above-mentioned needle stand keeper is driven to reach and engages needle stand again and this needle stand is remained on position on the Needle shield; In an illustrative embodiment, the above-mentioned opposed face of surface that reset for the far-end of above-mentioned needle stand keeper.
Above-mentioned medical needle protective cover also can be according to supporting in counterrotating mode by at least one bearing.
In another embodiment, above-mentioned medical needle protective cover comprises protective cover, and this protective cover can extend to extended position with the distal portion sealing cover with outer needle guard from reclaiming the position; Above-mentioned protective cover forms the probe guide in its distal portion, and this probe guide constitutes according to the mode of admitting probe; Above-mentioned probe according to mutually externally needle guard slidably mode constitute.
Description of drawings
With reference to the specific descriptions of the following examples, and in conjunction with following accompanying drawing, can understand more all sidedly below of the present invention with other feature and advantage:
Fig. 1 is the perspective view according to a specific embodiment of the medical needle protective cover of principle making of the present invention;
Fig. 2 is the perspective view that is the embodiment shown in Figure 1 that protects shape;
Fig. 3 is the profile perspective of protective cover that is in the medical needle protective cover shown in Figure 1 in disconnected orientation;
Fig. 4 is the profile perspective that is in the medical needle protective cover shown in Figure 2 of connection orientation;
Fig. 5 is the perspective view of the bearing of pin safety device shown in Figure 1;
Fig. 6 is the profile perspective of the stylet protective cover of pin safety device shown in Figure 1;
Fig. 7 is the enlarged perspective of the link of medical needle protective cover shown in Figure 1;
Fig. 8 is for being equipped with the perspective view of the Needle shield device as shown in Figure 1 that protects needle guard on it;
Fig. 9 is another enlarged perspective of link shown in Figure 7;
The profile perspective of the medical needle safety device of joint is represented for the present invention resets at reset surface and link in Figure 10～11 between the surface;
Figure 12 is applicable to the profile perspective of embodiment of the medical needle safety device of guiding (luer) locking needle stand for the present invention;
Figure 13 is the profile perspective that is the medical needle safety device as shown in figure 12 that protects shape;
Figure 14 represents the enlarged perspective of the medical needle safety device as shown in figure 12 of joint for the present invention resets at reset surface and link between the surface;
Figure 15 is the enlarged perspective that is the medical needle safety device as shown in figure 12 of reset shapes;
Figure 16 is the perspective view according to the embodiment of the medical needle protective cover that is applicable to biopsy of bone's pin of principle making of the present invention;
Figure 17 is the amplification cross-sectional view of degree of depth stop assembly shown in Figure 16;
Figure 18 is the amplification cross-sectional view of handle assembly shown in Figure 16;
Figure 19 is the perspective view of medical needle protective cover shown in Figure 16, and wherein degree of depth stop assembly moves forward along screw shell partly;
Figure 20 is the perspective view of medical needle protective cover shown in Figure 16, and wherein stylet extends from needle stand partly;
Figure 21 is the cross-sectional view of medical needle protective cover shown in Figure 20;
Figure 22 is the perspective view of medical needle protective cover shown in Figure 16, and wherein the stylet protective cover stretches out from needle stand fully;
Figure 23 A is the amplification cross-sectional view of medical needle protective cover shown in Figure 22;
Figure 23 B is the amplification cross-sectional view of another embodiment of medical needle protective cover shown in Figure 22;
Figure 24 is the perspective view of medical needle protective cover shown in Figure 16, wherein stylet to be taken off and syringe is inserted in the needle stand in order to aspirate;
Figure 25 is the perspective view of medical needle protective cover shown in Figure 16, and wherein degree of depth stop assembly is removed;
Figure 26 is the perspective view that is the medical needle protective cover shown in Figure 16 that protects shape;
Figure 27 is the amplification cross-sectional view of medical needle protective cover shown in Figure 26;
Figure 28 is the perspective view according to the embodiment of the medical needle protective cover that is applicable to the PICC introducer of principle making of the present invention;
Figure 29 is another perspective view of the embodiment of medical needle protective cover shown in Figure 28;
Figure 30 is the profile perspective of amplification that is in the embodiment as shown in figure 28 of advanced position;
Figure 31 is the perspective view that is the embodiment as shown in figure 28 that protects shape;
Figure 32 is the profile perspective that is the embodiment as shown in figure 28 that protects shape;
Figure 33 is the profile perspective that is the embodiment as shown in figure 28 of reset shapes of the present invention;
Figure 34 is the perspective view according to the embodiment of the medical needle protective cover that is applicable to implanted interface gateway (portaccess) of principle making of the present invention;
Figure 35 is the perspective view that is the embodiment as shown in figure 34 that does not protect shape;
Figure 36 is the profile perspective that is the embodiment as shown in figure 34 that protects shape;
Figure 37 is the profile perspective that is the embodiment as shown in figure 34 that does not protect shape;
Figure 38 is the perspective view according to the embodiment of the medical needle protective cover that is applicable to the medicine bottle path of principle making of the present invention;
Figure 39 is the perspective view that is the embodiment as shown in figure 38 that does not protect shape;
Figure 40 is the profile perspective that is the embodiment as shown in figure 39 that protects shape;
Figure 41 is the profile perspective according to the embodiment as shown in figure 39 that is reset shapes of principle making of the present invention;
Figure 42 is the perspective view that has the merit part bearing that resets of the specific embodiment of above-mentioned medical protection closure assembly;
Figure 43 is the perspective view that has the link embodiment of reset components;
Figure 44 is the perspective view of another embodiment of medical needle protective cover of the present invention;
Figure 45 is the amplification view of Figure 44;
Figure 46 is the amplification view of Figure 44 when joint resets the merit part;
Figure 47 is the perspective view of another embodiment of medical needle protective cover of the present invention;
Figure 48 is the also perspective view of an embodiment of medical needle protective cover of the present invention;
Figure 49 is the cutaway view of Figure 48;
Figure 50 is the cutaway view that has Figure 48 of the stylet of extracting out from outer pin;
Figure 51 is the enlarged drawing of stylet handle shown in Figure 48;
Figure 52 is the perspective view of another embodiment of medical needle shield of the present invention;
Figure 53 is the perspective view of regulatory work spare of the specific embodiment of medical needle protective cover of the present invention;
Figure 54 is the perspective view of another embodiment of medical needle protective cover of the present invention;
Figure 55 is the enlarged perspective of the degree of depth retainer of Figure 54 shown device;
Figure 56 is the cutaway view of the degree of depth retainer shown in Figure 55;
Figure 57 is the enlarged drawing of link of another embodiment of medical needle protective cover of the present invention;
Figure 58 is the enlarged drawing that is in the link shown in Figure 57 of link position;
Figure 59 is the enlarged drawing of the link shown in Figure 57, and wherein reset components is thrown off from this link;
Figure 60 is the enlarged drawing of the link shown in Figure 57, and wherein reset components engages with this link;
Figure 61 is the perspective view of another embodiment of medical needle protective cover of the present invention;
Figure 62 is the perspective view of the embodiment shown in Figure 61, and wherein degree of depth retainer moves down along the pin part;
Figure 63 has whole infundibulate guide and the perspective view of the occluder of the merit part that resets;
Figure 64 is the perspective view of the embodiment shown in Figure 63 during reducible joint;
Figure 65 is the cutaway view of the embodiment shown in Figure 64;
Figure 66 is the amplification view of the embodiment shown in Figure 64;
Figure 67 is the perspective view of the embodiment shown in Figure 64, and wherein occluder is inserted into by pin;
Figure 68 is the cutaway view of the embodiment shown in Figure 67;
Figure 69 is the amplification view of Figure 68;
Figure 70 is the perspective view of occluder;
Figure 71 is the perspective view of another embodiment of medical needle protective cover of the present invention;
Figure 72 is the cutaway view of safty shield shown in Figure 71;
Figure 73 is the amplification view of Figure 72;
Figure 74 is the amplification view of Figure 72;
Figure 75 is the perspective view that is used for the funnel-shaped piece of occluder guiding;
Figure 76 is the perspective view that is placed on the funnel-shaped piece of pin top;
Figure 77 represents to locate the merit part, and this location merit part is positioned at the inner radius that is used on the safty shield the occluder guide pin;
Figure 78 represents to insert the occluder in the funnel-shaped piece;
Figure 79 is the perspective view of another embodiment of medical needle protective cover of the present invention;
Figure 80 is the cutaway view of the embodiment shown in Figure 79;
Figure 81 is the enlarged drawing of the safty shield of the embodiment shown in Figure 79;
Figure 82 is the cutaway view with safty shield of the pin that has inserted;
Figure 83 is the perspective view with safty shield of the occluder that has inserted;
Figure 84 is the enlarged perspective with safty shield of adjustable guide;
Figure 85 is the enlarged perspective with safty shield of adjustable guide of being with the zone that resets;
Figure 86 is for forming whole guiding parts with occluder;
Figure 87 is for forming whole guiding parts with the occluder with spring;
Figure 88 is the enlarged drawing of the guiding parts shown in Figure 87;
Figure 89 is the occluder handle with the merit part that can reset;
Figure 90 has the occluder handle of pin that can reset being inserted into of merit part;
Figure 91 is another embodiment of medical needle protective cover of the present invention;
Figure 92 is the another embodiment of medical needle protective cover of the present invention.
The specific embodiment
Guiding at the fluidic infusion of intravenous injection, infusion of drug, fluid collection, other pin, the medical needle of using such as biopsy, more particularly, the Needle shield device that has the needle guard that the hazardness that prevents needle point presents at employing, comprise such as being needled into unexpectedly, the exemplary embodiments of disclosed medical needle protective cover and operational approach is discussed.Yet can imagine, many kinds of needle guards and device that the present invention finds that the infusion of preventative medicine, medicament, therapeutic agent etc. uses are used for following object, and this object is such as cerebral dura mater pin, spinal cord pin, biopsy needle, suction (chlba) pin, potts cournand pin, coaxial pin, the Y-sites etc. of drawing.Can expect that also the present invention can be used for collecting and is included in body fluid and/or the tissue that is adopted during the disposal relevant with biopsy of soft tissue, biopsy of bone, venesection, digestion, intestinal, urine, veterinary etc.Can expect, the medical needle protective cover can be used for other medical needle applications occasion, and it draws including, but not limited to fluid infusion, fluid collection, conduit, conduit, and pin (introducer), seal wire draw pin, biopsy needle draws pin (introducer), vertebra and cerebral dura mater, the inspection of living tissue ball, aphaeresis, dialysis, blood donor, spring inflation (veress) pin, Huber pin etc.
In the argumentation below, term " near-end " refers to that term " far-end " refers to the part away from the clinician near the part of clinician's structure.As here adopting, term " object " refers to adopt above-mentioned medical needle protective cover to receive infusion or has blood and/or the fluidic patient who collects from this device.According to the present invention, term " clinician " refer to infusion control, carry out fluid or tissue collecting, from the personnel of medical Needle shield device loading and unloading needle guard, it can comprise the paraprofessional personnel.
Following argumentation comprises the explanation of medical needle protective cover, and the operational approach to medical needle protective cover of the present invention is described afterwards.Concrete with reference to following embodiments of the invention, this embodiment provides by accompanying drawing.
Forward accompanying drawing to, at these accompanying drawings, the same numeral in a few width of cloth accompanying drawings is represented identical parts.At first with reference to Fig. 1～11, an example of the medical needle protective cover that constitutes according to principle of the present invention shown in the figure.This medical needle protective cover comprises protective cover 101, and this protective cover 101 can extend to extended position (Fig. 2,4) from reclaiming position (Fig. 1,3), with the pin in the needle assembly, such as, distal portion 115 big envelopes of stylet 106 get up.Above-mentioned needle assembly comprises the outer pin 103 of hollow.Stylet 106 according to mutually externally pin 103 slidably and setting with one heart so that use with outer pin 103 during medical needle applications, this point will be discussed in the back.Stylet handle 113 is connected so that it is handled with stylet 106.Also can consider other needle assembly, it comprises such as, needle guard, seal wire/draw pin etc.
Friction means 126 constitutes according to the mode that can engage with stylet 106 slidably between recovery position and extended position, thereby friction means 126 engages so that stylet 106 is applied pulling force with stylet 106.Can expect, can adopt one or more friction means 126.
Make link 105 move to link position (Fig. 4) corresponding to one pulling force in stop member 116 and/or 117.The power edge directive effect opposite by this stop member 116 and/or 117 generations with this pulling force.The couple of Chan Shenging makes link 105 move to link position like this.
When above-mentioned stylet 106 was connected surface 123 disengagements with stylet, link 105 and keeper 114 moved to link position.Connect surperficial 123 places at stylet, the rotation of link 105 is no longer because of being stoped with engaging of stylet 106.So link 105 and keeper 114 tilt to link position.Link 105 rotation makes and connects surface 122 and engage with stylet 106 with friction mode, thereby prevents that it from moving.
Power on acting on protective cover 101 produces when relatively moving its any direction along longitudinal axis x, and stop member 116 and/or 117 makes link 105 move to link position.So just, the inside that stylet 106 is remained on protective cover 101 presents with the danger of avoiding distal portion 115.Can expect that stylet connects surface 123 can comprise rib, protuberance, chamber etc., it is used for engaging with stylet 106, and perhaps the part on stylet connection surface 123 engages with stylet 106.
According to particular medical occasion and/or clinician's preference, the building block of medical needle protective cover can adopt and be fit to medical material, and this material is such as polymer or metal, such as rustless steel.Consider to adopt semi-rigid and inflexible polymer, and elastomeric material, make such as, the polypropylene of molded medical grade.But the common full-time staff of this area knows that according to the present invention, other material and the manufacture method that are suitable for assembling and making are also applicable.
In illustrative examples, protective cover 101 comprises bearing 102, and this bearing 102 covers link 105.Bearing 102 can be integrally formed, or is assembled into integral body by a plurality of sections, and it can be transparent, opaque basically, etc.
Reclaiming the position, protective cover 101 is provided with near the needle stand 104 of outer pins 103.Can expect that outer pin 103 also can be made by the polymeric material of flexibility, the building block of medical needle device can be used for other pin application scenario, such as, conduit, PICC draw uses together such as pin.
The embodiment of the reducible passive safety feature that provides in Fig. 1～11 has hollow needle 103, solid stylet 106, has the rotational shell in stylet protective cover 125 and thrust hole 133, has the bearing 102 of thrust ring 132 and has link 105.Above-mentioned thrust hole 133 constitutes according to the mode that allows 125 relative bearing 102 rotations of stylet protective cover with thrust ring 132.
After driving passive safety feature, adopt the resetted merit part of said apparatus.At first, safty shield 101 and pin 103 are positioned the top of stylet 106 (Fig. 1).During medical treatment, when extracting stylet 106 out from above-mentioned pin, above-mentioned stylet 106 is automatically protected (Fig. 2) by safty shield 101.
Make safty shield 101 reaches with the position (Fig. 3) of distal site before driving link 105 near stylet 115.In this position, by needle stand groove 124 and the interaction that is positioned at the link 105 in slip orientation, needle stand keeper 114 remains on the close end of needle stand 104 on the safty shield 101.Can expect that needle stand groove 124 can be formed by other shape that forms the chamber.
In Fig. 4, safty shield 101 is towards the distal portion of stylet 115 and further be positioned the position of driving security protection cover 101.Make above-mentioned link 105 move to connection orientation, the needle stand 114 of link 105 is thrown off with needle stand 104.
Fig. 2 that represent to drive with safty shield 101 locking.In this structure, take off outer pin 103, stylet distal portion 115 is according to preventing that the human body contact distance is positioned at enclosure, link 105 is in connection orientation.
Friction means 126 can be integral shaping with link 105, and extends from the orifice plate 118 that is mated, so that aim at and engage with stylet 106 with hole 138.This engages stylet 106 is produced friction pulling force.Corresponding to one friction pulling force in stop member 116 and/or 117 link 105 is moved with stylet 106, produce revolving force and orifice plate 118 is tilted.This revolving force and inclination make link 105 rotations.Can expect, can adopt single friction means.Can expect that in addition friction means 126 can have soft, it can have the variation flexibility that meets pin application scenario particular requirement.
Mobile realized such of erect image stylet 106, tilting force forms lever, or produces the moment of end awareness tool 119, and it is resisted, thereby prevents the rotation of link 105.By be in state disconnected or slip orientation (Fig. 3) at link 105, stylet connection surface 123 engages with stylet 106, resists above-mentioned tilting force.
This end awareness tool 119 leaves orifice plate 118 and extends.The plane that end awareness tool 119 can be relatively determined by orifice plate 118 is vertically directed.This vertical orientation is realized the inclination of orifice plate 118, connects or disconnected orientation and being provided with so that link 105 is in.Can expect, end awareness tool 119 can be according to the relative orifice plate 118 of multiple mode orientation, and can be flexibly from its extension.
Stylet connects the tilting force that the end awareness tool 119 of stylet 106 is pointed in surface 123 opposings.Above-mentioned tilting force by with stop member 116 and/or 117 in a friction means that cooperates 126 produce, and orifice plate 118 is tilted.But, because stylet connects engaging of surface 123 and stylet 106, so prevent along disconnected or slip orientation run-off the straight.When stylet 106 reclaims to near-end, protective cover 101 is when far-end stretches out, and stylet 106 is connected surface 123 joints continuously slidably with stylet.
Connect surperficially 123 the time when stylet 106 breaks away from above-mentioned stylet, as shown in Figure 4, produce pulling force between friction means 126 and the stylet 106.As discussing, make orifice plate 118 move to link position corresponding to the pulling force of stop member 116.
The rotation of orifice plate 118 makes link 122 engage stylet 106 with friction mode, thereby prevents that it from moving.When any direction along longitudinal axis x acted on reinforcement on protective cover 101, stop member 116,117 made orifice plate 118 move to link position.The inside that like this stylet 106 is remained in protective cover 101 presents with the danger of avoiding distal portion 115.
The connection surface 122 by the stylet 106 of protective cover 101 inside is convenient in the inclination of orifice plate 118 relative longitudinal axis x, realizes sliding presenting with the danger that is connected to prevent distal portion 115.Such as, as shown in Figure 3, orifice plate 118 is according to the about 90 ° angle orientation of relative longitudinal axis x, thus orifice plate 118 is according to being provided with the perpendicular substantially mode of stylet 106.Disconnected or slip orientation at this, stylet 106 is 138 the slides within the hole freely.When stylet 106 reclaims and protective cover 101 when stretching out, stylet 106 is connected surface 123 continuously and engages with stylet, orifice plate 118 maintenance and the perpendicular orientation of longitudinal axis x.
With reference to Fig. 4, protective cover 101 is handled, thereby made link 105 relative longitudinal axis x rotations with the friction means 126 of stop member 116 cooperations.Orifice plate 118 rotation and break away from state with stylet 106 vertical alignments, thus orifice plate 118 is according to respect to the angle orientation of longitudinal axis x less than 90 °.
When orifice plate 118 rotations, link 105 is near connection orientation.This connection orientation comprises because the connection orientation of orifice plate 118, connects the state that engages of surface 122 and stylet 106.This is bonded under the cooperation of friction means 126 and stop member 116,117, stylet 106 is produced connection frictional force, thereby prevent that the edge is to far-end with to proximal direction, stylet 106 moves relative to protective cover 101, and the inside that distal portion 115 is remained in protective cover 101 presenting with the danger that prevents it.
Stop member 116,117 is provided with according to the mode that does not hinder stylet 106.Stop member 116,117 forms the surface of being convenient to be provided with in connection orientation orifice plate 118.
Such as, as shown in Figure 3, protective cover 101 is in the recovery position and stylet 106 fully stretches out.Link 105 is in orifice plate 118 and is connected or the slip orientation, thereby orifice plate 118 is perpendicular substantially with longitudinal axis x.Stop member 116,117 can engage so that orifice plate 118 is remained on vertical orientations with orifice plate 118.Stop member 116,117 also can keep this orientation during the stretching out of stylet 106, or can not engage with stylet 106.
When stylet 106 reclaims and protective cover 101 when stretching out, as shown in Figure 4, friction means 126 cooperates with stop member 116 to make orifice plate 118 rotate to link position in the counterclockwise direction by with engaging of stylet 106 link 105 being applied pulling force.Stop member 116,117 engages with orifice plate 118, so that rotate to link position from the upright position, engages with stylet 106 thereby connect surface 122, as previously described.Above-mentioned shape prevents moving of stylet 106.
By connecting the frictional force that produces between surface 122 and the stylet 106, link 105 is connected with stylet 106.When protective cover 101 was in extended position, this frictional engagement prevented moving axially of stylet 106 relative bearings 102.Presenting of the danger that prevents stylet 106 that this shape is favourable.Can expect that link 122 can comprise that sharp edges is to increase frictional engagement.Also can expect, can be according to the particular requirement of pin application scenario, by one or more other factorses, such as, the thickness of the shape and size of the shape and size in hole 138, stylet 106, orifice plate 118, with respect to the size of the centrage contact point of stop member 116,117 and stylet 106, coefficient of friction between hole 138 and the stylet 106 produces and changes the above-mentioned frictional force that is connected.Can expect, can form friction means 126 like this, change pulling force with the variation of the gradient by orifice plate 118, the change of this pulling force can change by the geometry of friction means 126, such as, wedge shape with groove in thing, and change to engage stylet 106, also can pass through friction modified material, or coating, such as, oil, jelly, oils and fats, or the application selectively of the coating of change friction, change the change of above-mentioned pulling force.
Can expect that the hole in the orifice plate 118 can be by producing pulling force with engaging of stylet 106, to make link 105 rotations according to the similar fashion of having discussed.Also can expect, can adopt material, such as, jelly, oils and fats etc. so that stylet 106 is produced friction pulling forces, thereby make link 105 rotations.
The edge of a wing 162 of needle stand 104 is supported on the control surface 110 with concentric manner, and this control surface 110 is around the inner surface setting of bearing 102.Control surface 110 engages to realize its dismountable supporting with the outer surface 164 on the edge of a wing 162.Outer surface 164 can engage with control surface 110 at the state of friction, conflict etc., and this state is suitable for relative bearing 102, keeps dismountable location.Can expect that control surface 110 can engage with other parts of needle stand 104.
Bearing 102 comprises needle stand stop surfaces 112, and this needle stand stop surfaces 112 makes needle stand 104 relative bearings 102 realize the location.Needle stand stop surfaces 112 prevent install bearing 102 with relative bearing 102 and installation during, needle stand 104 is mobile to near-end.According to the requirement of specific medical needle applications occasion, the insertion degree of 112 pairs of relative bearings 102 of needle stand stop surfaces is advantageously controlled.Can adopt one or more needle stand stop surfaces 112.Can expect that needle stand stop surfaces 112 comprises spring, alligator clamp etc., to be connected with needle stand 104.
When stylet 106 along proximal direction reclaim and protective cover 101 when distal direction extends because the tilting force that friction means 126 produces, keeper 114 relative longitudinal axis x (Fig. 4) in the counterclockwise direction rotate.Keeper 114 is thrown off with needle stand groove 124, so that needle stand 104 and bearing 102 are thrown off.The clinician can pinch sheet 160 to finger and handle, so that according to the mode away from protective cover 101 needle stand 104 is handled.Can expect that keeper 114 is link 105 or stylet connection surface 123 relatively, according to multiple mode orientation.Also can expect, can be according to the mode of around needle stand 104, extending, to determine the various sizes of needle stand groove 124.Needle stand groove 124 can comprise tab etc., to keep by keeper 114.
For stylet distal portion 115 is passed in and out again using reducible passive safety feature, according to the similar mode of the driving condition in advance of this device, stylet protective cover 125 is cooperated with the close end of needle stand 104 with one heart.When this situation took place, the above-mentioned link surface 107 that resets surperficial 108 contacted with resetting.This acts on shown in the embodiment shown in Figure 10.
When along by near-end when the direction of far-end makes stylet 106 reaches, the above-mentioned surface 108 that resets resets surface 107 with end awareness tool 119 with link, bend to the top position on the surface of stylet 106, and order about link 105 and shift to the slip orientation from connection orientation.Be in the slip orientation at link 105, above-mentioned stylet 106 freely moves forward and enters into pin 103.
Simultaneously, the contact of surface between 107 because reset surface 108 and link reset ordered about needle stand keeper 114 and entered into needle stand groove 124.Like this, by with the interaction of needle stand groove 124, make the needle stand keeper 114 of above-mentioned link 105 once more needle stand 104 be remained in (Figure 11) on the safty shield 101.
When resetting, safty shield 101 and pin 103 are positioned the top of stylet 106, as shown in Figure 1.During medical treatment, when extracting above-mentioned stylet 106 once more out from pin, safty shield 101 automatically protects this stylet 106.
Figure 12～Figure 15 represents reducible safty shield of the present invention, and it is applied to have the pin of luer accessory 121 and luer cone 109.In the present embodiment, the surface that resets 108 is arranged at the part of leaving with needle stand 104.The surperficial spring 111 that resets applies power so that setover along proximal direction in the surface 108 that resets.This surperficial spring 111 that resets can be made from the known suitable elastomeric material of any amount, and this material comprises metal, plastics, elastomeric material and similar material.
In the present embodiment, resetting surface 108 when being arranged in luer accessory 121, the above-mentioned surperficial spring 111 that resets 108 trams that are in the needle stand, surface of guaranteeing to reset, alignment and engaging so that reset surface 108 and link reset between the surface 107.Above-mentioned spring 111 can be by elastomeric material, such as, rubber, formation such as urethanes.When with convex luer cone, such as, when luer locking piece or luer sliding part were inserted in the needle stand 104, the surperficial spring 111 that resets was compressed, and the surface 108 that resets is moved, thereby convex luer cone is cooperated with the whole length range of luer cone 109.Can expect that the surface 108 that resets also can be provided with around luer accessory 121, shown in Figure 23 B.Embodiment shown in Figure 23 B gives from link 105 and extends, and another embodiment on the surface 107 that resets that engages with maintenance surface 141.
For stylet distal portion 115 is passed in and out again using reducible passive safety feature, according to the similar mode of the driving condition in advance of this device, stylet protective cover 125 is cooperated with the close end of needle stand 104 with one heart.When this situation took place, the above-mentioned link surface 107 that resets surperficial 108 contacted with resetting.This acts on shown in the embodiment shown in Figure 14.
When along by near-end when the direction of far-end makes stylet 106 reaches, the above-mentioned surface 108 that resets bends to the top position on the surface of stylet 106 with the link surface 107 that resets with end awareness tool 119, and orders about link 105 and shift to the slip orientation from connection orientation.Be in the slip orientation at link 105, above-mentioned stylet 106 freely enters into pin 103.
Simultaneously, the contact of surface between 107 because reset surface 108 and link reset ordered about needle stand keeper 114 and entered into needle stand groove 124.Like this, by with the interaction of needle stand groove 124, make the needle stand keeper 114 of link 105 once more needle stand 104 be remained in (Figure 15) on the safty shield 101.
When resetting, safty shield 101 and pin 103 are positioned the top of stylet 106.During medical treatment, when extracting above-mentioned stylet 106 once more out from pin, safty shield 101 automatically protects this stylet 106.Safty shield 101 can comprise that the fastener member that cooperates with the needle stand (not shown) engages to be more convenient for.
Figure 16～Figure 27 represents reducible safty shield of the present invention, and it is applied to biopsy of bone's pin 101.In the present embodiment, luer cone 109 is used according to the mode of discussing at Figure 12～Figure 15 and in front.This biopsy of bone's pin 101 also can comprise adjustable degree of depth stop assembly 140, and this degree of depth stop assembly 140 is used to set the insertion depth of required pin 103.Lock nut 142 is locked in the desired position with degree of depth stop assembly 140.Tab 144 engages with corresponding groove 156 (shown in Figure 25), with constant depth stop assembly 140 when engaging lock nut 142.
As shown in figure 17, Needle shield 137 can be arranged on the degree of depth stop assembly 140.The respective threads 148 and 150 that is arranged at respectively on degree of depth stop assembly 140 and the sleeve 151 is used to make degree of depth stop assembly 140 to move with screwing.Needle shield 137 is according to operating with Fig. 1～11 protective covers of being discussed, 101 similar modes, and this point will be discussed in the back more specifically.
The medical needle shield of stylet 106 usefulness comprises link 105, similar with the mode of discussing at Fig. 1～11, this link 105 is arranged at the inside of stylet protective cover 125, this stylet protective cover 125 can extend to extended position from reclaiming the position, thereby the distal portion big envelope of the stylet 106 of needle assembly is got up.The pin 103 of stylet 106 relative needle assemblys slides and is provided with one heart, so that during biopsy of bone's pin is used, uses with the latter.Stylet handle 113 is connected with stylet 106.
When operation, clinician's (not shown) is operated handle 113, thereby protective cover 101 is in recovery position (Figure 16,18,19), and link 105 is in disconnected or sliding position.Handle 113 can comprise and is used for the tab 152 temporary fixed to needle stand 104.Needle stand 104 comprises the opening (not shown), thereby when making tab 152 with register in tab 152 rotation, handle 113 can break away from temporary fixed.Stylet 106 relative protective covers 101 and stretching out, thus needle stand 104 around pin 103 and be provided with, needle stand 104 is equipped with bearing 102 removably.Adopt the disposal of the medical needle shield that has stylet 106 and pin 103 by the clinician, until end.
For stylet distal portion 115 is passed in and out again to use reducible passive safety feature,, stylet protective cover 125 is engaged with one heart with the close end of needle stand 104 according to the similar mode of driving in advance of this device.When this situation took place, the above-mentioned link surface 107 that resets surperficial 108 contacted with resetting.This acts on shown in the embodiment shown in Figure 23 A.
When above-mentioned stylet 106 by near-end during to the reach of the direction of far-end, the above-mentioned surface 108 that resets makes link reset surface 107 with 119 bendings of end awareness tool, arrive the position of top on the surface of stylet 106, and order about link 105 and move on to the slip orientation from connection orientation.When above-mentioned link 105 was positioned at the slip orientation, stylet 106 freely was advanced in the pin 103.
Simultaneously, the action by contact of surface between 107 because above-mentioned reset surface 108 and link reset makes above-mentioned needle stand keeper 114 enter into needle stand groove 124.Like this by with the interaction of needle stand groove 124, the needle stand keeper 114 of link 105 is remained in needle stand 104 on the safty shield 101 once more.
When above-mentioned resetting, stylet protective cover 125 and pin 103 are positioned stylet 106 tops, as shown in figure 16.During medical treatment, when above-mentioned stylet 106 was extracted out from pin once more, above-mentioned stylet 106 automatically was subjected to the protection of stylet protective cover 125.
Figure 24 is illustrated in when taking off stylet 106 syringe that inserts for suction in the needle stand 104.
Figure 25 represents to take off degree of depth stop assembly 140 and Needle shield 137 is in the reducible security protection closure assembly 101 that reclaims the position.Figure 26～27 expressions are in the Needle shield 137 of protection shape.Link 105 ' is arranged in the Needle shield 137, and determines to connect surperficial (not shown).Connect the surface and form the hole, this hole is according to admitting the mode of hollow needle 103 to constitute slidably between recovery position and extended position.Link 105 ' comprises the pulling force production part, such as, from the friction means 126 ' of its extension.Link 105 ' comprises that pin connects surface 123 ', and it can engage to prevent the rotation of link 105 ' with hollow needle 103.
Friction means 126 ' constitutes according to the mode that can engage with hollow needle 103 reclaiming slip between position and the extended position, and hollow needle 103 produces pulling force thereby friction means 126 ' engages hollow needle 103.Can expect, can adopt one or more friction means 126 '.
Make link 105 ' move to link position (Figure 27) corresponding to one pulling force in stop member 116 ' and/or 117 '.The power edge directive effect opposite by stop member 116 ' and/or 117 ' generation with this pulling force.Produce couple like this, this couple moves to link position with link 105 '.
Funnel shaped part 146 in the Needle shield 137 as the occluder guide so that insert occluder or analog.Degree of depth retainer 140 can the sliding type removal, and at this moment, safty shield 137 remains on proximal location.Allow the clinician to adopt the entire length of pin 103 like this.As shown in the figure, before driving security protection cover 137, pull down degree of depth retainer 140.Mode as an alternative, safty shield 137 can be connected with degree of depth retainer 140, or as the part of degree of depth retainer 140 and form.
Figure 28～29 expression protective cover that resets of the present invention, it is used for PICC and draws pin or similar conduit and pin and draw pin.In the present embodiment, hollow needle 103 is polymer, and stylet (or interior pin) the 106th, the borehole jack pipe of sharp hollow.The handle 113 that PICC draws pin comprises closure plug 135 and the flash chamber 136 that is communicated with interior pin 106.Luer accessory 121 is communicated with flash chamber 136 and allows and other the cooperating of medical apparatus.
The medical needle protective cover comprises protective cover 101, its with discussed similar, can reach extended position (Figure 31～32) from reclaiming position (Figure 28), thereby the distal portion sealing cover of the hollow needle 103 of needle assembly is got up.Hollow needle 103 is the needle stand 104 (Figure 28) of needle assembly setting relatively with one heart slidably, so that therewith use during PICC draws the pin application.Needle stand 104 can be knockdown, or non-knockdown.Needle stand 104 preferably is made of polymeric material.Can expect that medical needle of the present invention can have protection needle guard parts, so that during the transportation of medical needle and use, further protect.
Handle 113 is connected with interior pin 106.Handle 113 can comprise the flash chamber 139 that is communicated with interior pin 106.Luer accessory 121 is communicated with flash chamber 139, this chamber 139 or by the luer sliding part, or luer locks attached merit part, is connected with various medical apparatus.
The edge of a wing of needle stand 104 is supported on concentric manner on the control surface of stylet protective cover 125, and this point will be discussed in the back.This control surface be used to realize that the edge of a wing of dismountable supporting engages.The inside that keeper 114 extends with the needle stand groove 124 that is received in needle stand 104.Corresponding to the disconnected of link 105 or slip orientation, keeper 114 is arranged at the inside of needle stand groove 124, so that protective cover 101 is installed removably.When interior pin 106 reclaims and protective cover 101 when stretching out, keeper 114 rotate in the counterclockwise direction with needle stand groove 124 throws off, thereby with needle stand 104 and 125 disengagements of stylet protective cover.
Stylet protective cover 125 is provided with according to the distal portion rotation of pin 106 in making and with the mode that it has covered.Handle 113 is installed on stylet protective cover 125, and this stylet protective cover 125 is at the extended position of protective cover 101, relatively protective cover 101 and interior pin 106 and rotate.Similar with the front argumentation, the relative rotation of stylet protective cover 125 realizes by the supporting member and the axle that are formed at the dead eye place in the stylet protective cover 125.At link position, the bearing shape provides supporting to the rotation of stylet protective cover 125 relative protective covers 101 and interior pin 106.
In when operation, needle stand 104 is thrown off with protective cover 101, and stylet protective cover 125 rises at the distal portion cover of extended position with interior pin 106, as previously described.So interior pin 106 is remained on the inside of protective cover 101, present with the danger of avoiding its distal portion.
For pin 106 in making passes in and out again using reducible passive safety feature, according to the similar mode of driving condition in advance of this device, the stylet protective cover 125 of center of rotation is engaged with the close end of concentric manner with needle stand 104.When this situation takes place, be positioned at link on the end awareness tool 119 surface 107 that resets and surperficial 108 contact with resetting.This acts on shown in Figure 30 and the embodiment shown in Figure 33.
When pin 106 moves forward in making along the direction from the near-end to the far-end, the surface 108 that resets makes link reset surface 107 with end awareness tool 119 rotation, to the position of the top on interior pin 106 surfaces, and order about link 105 from connection orientation to the slip orientation.When link 105 was in the slip orientation, interior pin 106 freely entered into the inside of hollow needle 103.
Simultaneously, the action by contact of surface between 107 because above-mentioned reset surface 108 and link reset makes above-mentioned needle stand keeper 114 enter into needle stand groove 124.Like this by with the interaction of needle stand groove 124, the needle stand keeper 114 of link 105 is remained in needle stand 104 on the safty shield 101 once more.
When resetting, safty shield 101 and hollow needle 103 are positioned stylet 106 tops, as shown in figure 28.During medical treatment, when pin 106 was extracted out from pin once more in above-mentioned, above-mentioned interior pin 106 automatically was subjected to the protection of safty shield 101.
Figure 34～37 expressions are used for of the present invention reducible protection safety closure assembly of interface in-out apparatus or implantable pump.Here can expect, in the implantable patient's body of interface in-out apparatus or place its outside.The operation of present embodiment and structure can be according to each embodiment described here, such as, the embodiment shown in Fig. 1～11.Figure 34～Figure 37 represents to implant interface 127 and have the skin layer 129 of implanting interface turnover body 130.This interface turnover body comprises the surface 108 that resets.In the present embodiment, before using, stylet 106 is got up by safty shield 101 protection.Reset surface 108 and link resets the surface 107 as previously described, and safety device is resetted so that stylet 106 passes skin layer 129, enters and implants interface 127.When implanting interface turnover body 130 and pull down stylet 106, this security protection closure assembly drives again.
With reference to Figure 38～41, reducible safety guard device of the present invention is shown in the drawings, it is used for medicine bottle turnover body.The operation of present embodiment and structure can be according to each embodiment described here, such as, the embodiment shown in Fig. 1～11.Figure 38～41 expression medicine bottles 131 and corresponding medicine bottle turnover body 134.Before using, stylet 106 is got up by safty shield 101 protection.The surface 108 that resets engages the links surface 107 that resets, thereby allows stylet 106 to enter medicine bottle 131.When medicine bottle turnover body 134 is pulled down stylet 106, this security protection closure assembly drives again.
With reference to Figure 42～Figure 46, illustrate in the drawings according to principle of the present invention and constitute, but have another embodiment of the medical needle closure assembly of reset feature.
Above-mentioned reset components 201 is preferably inactive, and this shows that this device can not reset because of unexpected.In addition, preferably design reset components 201 like this, thereby must expend special energy to drive reset components 201 and resetting means.Therefore, reset components 201 preferably can be changed between activity and inactive state.This can finish by many modes, and these many modes comprise articulated elements, cantilever beam, bi-stable mechanism, spring etc., but is not limited to this.
In order to drive reset components 201, must expend special energy, this energy can require the reset components 201 and the geometrical shaped body 209 that resets to be in contact with one another, and this geometrical shaped body 209 that resets has been positioned at the position of this device that resets.Shown in Fig. 3～5, this geometrical shaped body 209 that resets can be arranged on needle stand/handle 210.This geometrical shaped body 209 that resets can comprise the luer spare that is positioned on needle stand/handle, has the discrete item of the geometrical shaped body that resets and is positioned at geometrical shaped body on the dish.But, the geometrical shaped body 209 that resets be not limited to be used for reset components 201 interactional any devices on geometry, thereby reset safty shield 212.
In addition, preferably include holding member 211.In many occasions, preferably have safty shield 212, this safty shield 212 keeps being connected with stylet 208 until safty shield 212 according to certain mode.In the embodiment shown in Figure 44～46, protective cover 212 remains on needle stand/handle 210.In this structure, keep safty shield 212 when the end that detects stylet 208 at safty shield 212 is connected with stylet 208, take off stylet 208.Present embodiment provides the holding member 211 as detent mechanism, and it allows safty shield 212 to remain on needle stand/handle 210.This holding member 211 also can comprise fastener member, locking bolt, hook, friction member etc., but is not limited to this.
With reference to Figure 47～51, in some is disposed, stylet handle 221 must be remained on the main device handle 222.Holding member before comprises ratchet and bayonet-type stylet keeper.These methods can produce sudden forces when removing, thereby the device mistake is moved, or the patient is caused further pain.Because the effect of the bigger power that rotatablely moves that produces during disposing, these maintenance methods perhaps also can't realize.
Embodiment shown in Figure 47～51 represents to have the keeper of buckle mechanism 223.It allows main device handle 222 is realized firm maintenance.Fastener member 225 is in place securely, and the opposing rotation is moved and moved axially.This buckle mechanism 223 also can have button/lever 226, or other similar buckle mechanism 223, so that hasp 225 is thrown off.When removing, allow not produce sudden forces and easy single handed release like this.
With reference to Figure 52～60, in some is disposed, can require to adopt degree of depth retainer 231.This degree of depth retainer 231 often has regulatory work spare 232.Shown in Figure 53, this regulatory work spare 232 can comprise screw thread 234, but is not limited to this.In this occasion, safty shield 233 can comprise regulatory work spare 232, such as the screw thread 234 that makes 231 reaches of degree of depth retainer.This safty shield 233 also can comprise the degree of depth of depth indicator 235 with indicated depth retainer 231.Above-mentioned safty shield 233 also can comprise the keeper 236 of degree of depth retainer 231 usefulness.Above-mentioned keeper 236 can comprise ratchet, hook, friction member etc., but it is not limited thereto.This degree of depth retainer 231 also can be the mechanism of driving security protection cover 233.
Figure 54 represents another embodiment, and its expression has the safty shield 233 of degree of depth retainer 231, and wherein this degree of depth retainer 231 has regulatory work spare 232.Above-mentioned regulatory work spare 232 can be with aforesaid similar.This degree of depth retainer 231 can comprise and aforementioned similar keeper 236.Above-mentioned keeper 236 also can be realized the function of safty shield ratchet.An embodiment also comprises lock nut 237, and this lock nut 237 can be used for being connected (with reference to Figure 52) with degree of depth retainer 231 with screw thread 234.
With reference to Figure 57 and 58, for some disposal, perhaps must pass through pin 238 introducing devices 240, such as, seal wire, conduit etc.In these cases, preferably also driving security protection cover 233 is to protect sharp-pointed portion 239, and said apparatus 240 remains in the pin 238 simultaneously.An embodiment comprises double ended awareness tool 241.Such end awareness tool allows by pin 238, and realization has the repertoire of the device of device 240.Double ended awareness tool 241 is located in the mode of sliding along pin 238, prevents the connection of link 242 thus.Double ended awareness tool 241 also can be located according to the mode of sliding in the outer rim of pin 238.In this position, this double ended awareness tool 241 detects the end of pin 238 continuously.But, when link 242 by and when arriving its connection status, any device 240 that double ended awareness tool 241 can be compassingly set in the pin 238 extends.
The application scenario that the Another Application of double ended awareness tool 241 is used to reset.In some occasions that resets, above-mentioned end awareness tool be positioned at pin 238 below.This device can't be resetted.Can pass through reset components 243, force double ended awareness tool 241, it is resetted around pin 238.The softness of this double ended awareness tool 241 is enough to extend around pin 238 when resetting, but its rigidity that has is enough to not slide around pin during normal use.Can require equilibrium of forces like this.Double ended awareness tool 241 also can drive on the pin cone.
Figure 61～62 expression biopsy of bone devices, biopsy of bone's device that it often is called the I type has degree of depth retainer 253.Typical type I biopsy of bone matching requirements adopts degree of depth retainer 253.They often have regulatory work spare 252, and this merit part comprises screw thread, but are not limited to this.But, have the disposal of the full pin length section 255 that adopts this device.In this occasion, take off this degree of depth retainer 253, thereby long pin is exposed to the open air.Because at some disposal, require the user that this product is taken apart, this can have problems.The full pin length section 255 that illustrated embodiment allows pin exposes to the open air beginning.Desired degree of depth retainer 253 can be arranged at the back of the full pin length section 255 that initially exposes to the open air.So just, allow the user do not take apart or the situation of number of assembling steps under carry out the demanding perfection disposal of pin length section 255.For other disposal, technical also not variation.Degree of depth retainer 253 also is used for the field that increases day by day that scalable is used.In this occasion,, also be favourable for safety device.Owing to do not have desiredly to take apart or assemble,, dismantle degree of depth retainer 253 simultaneously full pin length section 255 is passed in and out so almost there is not the user to drive safety device because of carelessness.
With reference to Figure 63～78, have the another embodiment of the present invention of the merit part that resets shown in the figure.Shown in Figure 63～Figure 70, the occluder 361 with the solid 362 that resets interacts with reset components 363.This occluder 361 can comprise handle 370.This handle 370 can comprise chamber 365, during resetting, and these chamber 365 protection pins 366.This occluder 361 also can comprise funnel-shaped piece 364, and it is directed to occluder 361 inner radius of pin 366 by safty shield 369.Above-mentioned funnel-shaped piece 364 can comprise the locating surface 367 that is positioned on the shell of being convenient to lead.This funnel-shaped piece 364 slides along occluder 361, thereby funnel-shaped piece 364 allows occluder 361 to pass funnel-shaped piece 364.This funnel-shaped piece 364 can be discrete item.This occluder 361 also can comprise according to the localized stop member 368 of the mode that prevents to reset.This stop member 368 is also removable, thereby the solid 362 that allows to reset when lacking stop member 368 interacts with reset components 363.The mechanism that is used to stop member 368 is moved comprises lever, articulated elements, button, locking piece, fastener member, ratchet etc., but is not limited thereto.
In the present embodiment, occluder 361 constitutes like this, thereby after occluder 361 passes pin 366 and drain sample, stop member 368 avoid the resetting interaction of solid 362 and reset components 363.Then, make stop member 368 move to again solid 362 and reset components 363 interactional positions.The solid 362 that resets interacts with reset components 363, thereby link 360 is thrown off with latched position.So just, allow safty shield 369 to prepare to reuse.Can expect that also the solid 362 that resets can be positioned at other the position on the occluder 361, it comprises the opposed end of occluder 361, but is not limited to this.
Shown in Figure 71～74, safty shield 389 comprises the surface 387 that resets, and this surface 387 that resets can drive manually to interact with reset components 383.This can directly be connected with reset components 383 on surface 387 again.This reset components 383 also comprises the part of the following parts that are not limited thereto: needle stand/handle, inner shell, shell, link and/or occluder.Mode as an alternative, reset components 383 can be and the interactional discrete item of above-mentioned any parts.The above-mentioned surface 387 that resets can be connected with the solid 382 that resets or interact, and this solid 382 that resets is used for interacting so that link 380 is thrown off from latched position with reset components 383.This interface 387 that resets can comprise spring, articulated elements, lever, button, switch, sliding part etc.The interface 387 that resets also can comprise paired interface.Preferably adopt this mode to place with the finger of guaranteeing to be fit to.Can stagger in paired interface, to guarantee with the special energy safty shield that resets.
The above-mentioned surface that resets 387 can require another orifice plate 388, thus with the link 380 of original locking be connected unlock, safty shield 389 is unloaded from the needle point that pollutes.This another orifice plate 388 can form like this, is positioned in the safty shield 389 thereby the driving at the interface 387 that resets will connect surface 386, to realize connection to far-end driving security protection cover 389 time.This mode can be avoided appearing at when resetting, and safty shield 389 is unexpectedly pulled down from the needle point that pollutes.
Shown in Figure 75～78, funnel-shaped piece 392 is directed to occluder 391 inner radius of pin 396.Funnel-shaped piece 392 can constitute like this, and it allows and locking pin 396 locking or frictional fit.This funnel-shaped piece 392 also can constitute like this, thereby it comprises the location merit part 393 that is positioned on the safty shield, and this location merit part 393 is positioned at the inner radius that is used for occluder 391 is directed to pin 396 on the safty shield 399.The location merit part 393 that is positioned on the safty shield 399 also can constitute like this, finishes required cooperation with the holding position.Such cooperation interface comprises snap fit part, friction fit, ratchet etc., but is not limited to this.Preferably select to adopt the funnel-shaped piece 362 that has or do not have safty shield 399, thereby the clinician can select to adopt the funnel-shaped piece 392 of the safty shield 399 that has protection pollution tip, with inner radius with occluder 391 guide pins 396.It also allows do not having to carry out general use under the situation of safety device.
With reference to Figure 79～92,, preferably make occluder be funnel-form and pass needle device in some application scenario.Guiding parts preferably also is set in safty shield, and it can require before adopting funnel-shaped piece, the driving security protection cover.In addition, the link that preferably resets, the tip that this link protection is polluted (such as, medical needle, stylet etc.).
In one embodiment, provide guiding parts 402, this guiding parts 402 forms whole with safty shield 401.Guiding parts 402 comprises the interface of geometry in particular, and it allows the transfixion pin device, such as, occluder 403 grades lead.Guiding parts 402 constitutes like this, thereby transfixion pin device 403 can not hinder the locking mechanism 404 in the safty shield 401.Other embodiment comprises solid, and it allows guiding parts 402 is led continuously, but it also provides the zone 406 that resets of safty shield 401 usefulness.
Figure 81～Figure 82 represents guiding parts 412, and it has the compliant member 415 that allows guiding parts 412 varying sized.Allow like this transfixion pin device 413 is led.This compliant member 415 also allows to provide the bigger opening in zone 416 again.This zone 416 that resets is for following zone, this zone solid 417 that allows to reset, or be positioned at such position with interactional other the solid of the solid 417 of resetting, thereby its with reset components 418 interactions so that locking mechanism 414 be connected disengagement.So just, allow safty shield 411 to prepare to reuse.
Shown in Figure 83～Figure 85, another embodiment comprises guiding parts 422, but this guiding parts 422 has and can pass through positioning element 429 localized adjustment component 425.But should adjustment component 425 can be inflexible or flexible.But above-mentioned positioning element 429 can comprise and being used for and above-mentioned adjustment component 425 interactional sleeves, button, lever, the axle collar or other parts, but be not limited to this.But above-mentioned adjustment component 425 forms like this, thereby but positioning element 429 and adjustment component 425 interactions, but make adjustment component 425 location so that transfixion pin device 423 is led.But adjustment component 425 can form like this, thus the guiding parts 422 that can obtain to fit more, and it otherwise cooperates around pin 420.Positioning element 429 can comprise clamping surface 424.This clamping surface 424 can form like this, thereby when next driving of safty shield 421, in the occasion that drives, positioning element 429 is with compliant member 425 location.This positioning element 429 also can form like this, thereby but positioning element 429 can re-position at the position that adjustment component 425 provides the zone 426 that resets.
Shown in Figure 86～88, another embodiment shown in the figure, wherein, 432 one-tenth integral body of guiding parts have occluder 431.This guiding parts 432 can constitute like this, thereby its maintenance is connected with occluder 431.This guiding parts 432 also can constitute like this, thereby it can slide along occluder 431.Guiding parts 432 has been shown in the present embodiment, and it has spring 433 (with reference to Figure 87～88).This spring 433 can comprise spring, folding plastic, stretching structure, line, silk etc., but is not limited to this.It forms like this, thereby the natural resting position of above-mentioned guiding parts 432 is positioned at the end of occluder 431.Allow like this occluder 431 is led.This guiding parts 432 constitutes like this, and when making pin 430 when occluder moves, this guiding parts 432 is sent to the center with pin.This is directed at does not almost have to carry out under the resistance.When above-mentioned pin 430 contacts the center of guiding parts 432, form locking surface 434, this locking surface 434 forms like this, and pin 430 tendencies are locked on the guiding parts 432, such as, on the luer cone.After pin 430 was locked on the guiding parts 432, successive mobile tendency made this guiding parts 432 slide along occluder 431.Afterwards, this occluder 431 is directed in the pin 430, extrudes sample.
Shown in Figure 89～90, occluder handle 445 can form like this, thereby the 447 one-tenth integral body of solid that reset are formed on the occluder handle 445.This occluder handle 445 also can comprise locking surface 444, and this locking surface 444 forms like this, thereby pin 440 tendencies are locked on the occluder handle 445.
Other embodiment comprises the improved form (with reference to Figure 91) of end awareness tool 452.This end awareness tool 452 comprises that pin connects surface 451, and this pin connects surface 451 on pin 450, and the power that provides opposing to connect.When the geometry of pin 450 change (such as, the end of pin, pin grinding stone, pin cone etc.), the variation of 452 pairs of pins 450 of this end awareness tool detects, and no longer stops to connect.The mode that changes the solid of pin 450 comprise the surface of inclination, fluting surface, protuberance, be used to amplify the arbitrary surfaces of end perceptual signal, but be not limited to this.Figure 91 represents inclined surface 454.This inclined surface 454 forms like this, thereby the change of the geometry of slightly little pin 450 is changed inclined surface 454 sharp.It is to be caused by the geometrical condition that inclined surface 454 produces.
Figure 92 represents another embodiment, and it has independent pin and connects surface 461.This independent pin connects the 461 pairs of pins 460 in surface and applies frictional force.This power is used for connecting with opposing with pin link 462.Change at the geometry of pin 460, can produce the frictional force of the connection on the opposing pin 460, the frictional force that prevents from like this to be applied (such as, the end of pin cone, pin grinding stone, pin etc.).
Under the situation that does not break away from essence of the present invention or essential features, the present invention can implement according to other particular form.Therefore, should consider present embodiments according to schematic not restrictive all aspects, scope of the present invention is provided by appended claim, rather than is provided by the argumentation of front, therefore, the present invention will comprise the implication and the interior all changes of scope of the equivalent of claim.
Claims (27)
1. medical needle protective cover, it comprises:
Needle stand, this needle stand have the outer needle guard that extends to distal portion from it, interior pin according to mutually externally needle guard slidably mode be provided with;
At least one protective cover, this protective cover can extend to extended position from reclaiming the position, so that the distal portion big envelope of pin in will being somebody's turn to do;
Above-mentioned protective cover comprises link, and this link is arranged at the inside of above-mentioned protective cover and limit connects the surface, this connections surface go up formation according between above-mentioned recovery position and extended position, admit slidably above-mentioned in the hole that constitutes of the mode of pin;
Above-mentioned link comprises at least one pulling force production part, thereby admit slidably above-mentioned in pin during, at least one pulling force production part engages so that pin in this is produced pulling force with above-mentioned interior pin, this pulling force makes a link internally inclination and the rotation of pin mutually with protective cover, engages with above-mentioned interior pin to prevent the slip of above-mentioned interior pin at the extended position of above-mentioned protective cover thereby connect the surface;
Above-mentioned link also comprises the pin connection surface from its extension, can engage to prevent the rotation of link with above-mentioned interior pin thereby above-mentioned pin connects the surface;
Be used for realizing the keeper that to be disengaged with needle stand;
Above-mentioned link also comprises the surface that can reset with the link of the surface in alignment that resets.
2. medical needle protective cover according to claim 1 is characterized in that at least one pulling force production part forms the chamber, aligns with above-mentioned hole substantially in this chamber, and this chamber constitutes so that pin in above-mentioned is produced pulling force according to the mode of admitting above-mentioned interior pin slidably.
3. medical needle protective cover according to claim 1 is characterized in that above-mentioned link comprises planar substantially orifice plate, and this orifice plate comprises the connection surface that forms above-mentioned hole.
4. medical needle protective cover according to claim 3 is characterized in that above-mentioned at least one pulling force production part comprises the paired arm that extends from above-mentioned orifice plate.
5. medical needle protective cover according to claim 4 is characterized in that above-mentioned paired arm comprises flexible parts.
6. medical needle protective cover according to claim 1, it is characterized in that between disconnected orientation and connection orientation, the internally axle inclination and the rotation of pin mutually of above-mentioned link, according to this disconnected orientation, pin link slip relatively in above-mentioned, according to above-mentioned connection orientation, above-mentioned connection surface engages with above-mentioned interior pin to prevent the slip of pin in the extended position of at least one protective cover above-mentioned.
7. medical needle protective cover according to claim 1, it is characterized in that above-mentioned protective cover comprises shell, this shell limits at least one stop member that extends from its surface, and this at least one stop member can engage with above-mentioned link to order about above-mentioned link and shift to connection orientation.
8. medical needle protective cover according to claim 3, it is characterized in that above-mentioned protective cover comprises shell, this shell limits at least one stop member that extends from its surface, above-mentioned orifice plate can move vertically to engage with above-mentioned at least one stop member, and this at least one stop member makes above-mentioned link rotate to connection orientation.
9. medical needle protective cover according to claim 1 is characterized in that above-mentioned at least one protective cover supports to realize relative rotary motion by at least one bearing.
10. medical needle protective cover according to claim 1 is characterized in that above-mentioned interior pin is connected with the handle that it is handled.
11. medical needle protective cover according to claim 1 is characterized in that above-mentioned needle stand installs the shell of above-mentioned at least one protective cover removably.
12. medical needle protective cover according to claim 1 is characterized in that above-mentioned needle stand limits the needle stand groove, this needle stand groove constitutes according to the mode of the keeper of admitting above-mentioned link.
13. medical needle protective cover according to claim 1 is characterized in that above-mentioned link comprises the arched arm that at least one is outwards outstanding, this arm extends to pin and connects the surface.
14. medical needle protective cover according to claim 1 is characterized in that it also comprises a plurality of protective covers.
15. medical needle protective cover according to claim 1 is characterized in that above-mentioned link reset table face comprises the distal surface of facing of above-mentioned keeper.
16. medical needle protective cover according to claim 1, it is characterized in that the above-mentioned surface that resets constitutes in the following manner, this mode is: make above-mentioned link reset surface curvature so that above-mentioned link above-mentioned relatively in the vertical axis tilt and the rotation of pin, thereby above-mentioned connection surface with above-mentioned in pin throw off.
17. medical needle protective cover according to claim 1 is characterized in that above-mentioned medical needle is applicable to biopsy of bone.
18. medical needle protective cover according to claim 1 is characterized in that the above-mentioned surface that resets separates with above-mentioned needle stand and orders about by spring shifting to the above-mentioned link surface that resets.
19. medical needle protective cover according to claim 18 is characterized in that it also comprises the guiding convex cone that forms by above-mentioned needle stand.
20. medical needle protective cover according to claim 1 is characterized in that it also comprises protection needle sleeve parts.
21. medical needle protective cover according to claim 1 is characterized in that in the distal portion of above-mentioned protective cover the probe guide being set, it constitutes according to the mode of admitting occluder, above-mentioned occluder according to by above-mentioned needle guard slidably mode form.
22. medical needle protective cover according to claim 1 is characterized in that it also comprises holding member.
23. medical needle protective cover according to claim 1 is characterized in that it also comprises and is used for guiding parts that the transfixion pin device is led.
24. medical needle protective cover according to claim 1 is characterized in that it also comprises and is used for funnel-shaped piece that occluder is led.
25. medical needle protective cover according to claim 1 is characterized in that it also comprises the ratchet that is arranged between above-mentioned needle stand and the above-mentioned protective cover.
26. medical needle protective cover according to claim 1 is characterized in that above-mentioned protective cover also comprises flexible funnel-shaped piece.
27. medical needle protective cover according to claim 1 is characterized in that above-mentioned protective cover also comprises degree of depth retainer.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/721,526 | 2003-11-25 | ||
| US10/721,526 US7179244B2 (en) | 2001-03-15 | 2003-11-25 | Resettable safety shield for medical needles |
| US10/739,868 | 2003-12-18 | ||
| US60/608,565 | 2004-09-10 | ||
| US60/622,392 | 2004-10-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1886162A CN1886162A (en) | 2006-12-27 |
| CN100571796C true CN100571796C (en) | 2009-12-23 |
Family
ID=37583973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800346447A Active CN100571796C (en) | 2003-11-25 | 2004-11-23 | Resettable safety shield for medical needles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100571796C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009067648A1 (en) * | 2007-11-21 | 2009-05-28 | Becton, Dickinson And Company | Safety needle guard |
| DE102012102519A1 (en) * | 2012-03-23 | 2013-09-26 | Pfm Medical Ag | Safety pin device, in particular for puncturing a subcutaneously implanted port in a human or animal body |
| WO2016185950A1 (en) * | 2015-05-15 | 2016-11-24 | テルモ株式会社 | Catheter assembly |
| ES2880417T3 (en) * | 2017-03-07 | 2021-11-24 | Piper Access Llc | Safety protection elements for elongated instruments and related systems |
| CN110090339B (en) * | 2019-06-06 | 2021-05-28 | 四川大学华西医院 | Medical needle cap separator |
-
2004
- 2004-11-23 CN CNB2004800346447A patent/CN100571796C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1886162A (en) | 2006-12-27 |
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