MXPA06004634A - Safety shield - Google Patents

Abstract

A safety shield (20) is provided including a piercing member (22) having a proximal end (26), a distal end and defining a longitudinal axis. A clip (28) defines a first cavity (30) dimensioned for movement of the piercingmember (22) therethrough and is oriented in an axis transverse to the longitudinal axis. The first cavity (30) is movable between a movable orientation and a binding orientation. The clip (28) includes a first leg (32) that defines a second cavity (34) dimensioned for movement of the piercing member (22) therethrough and a distal part (36) being configured to engage a medical device (38). The clip (28) further includes a second leg (40) having a bearing surface (42) that engages the piercing member (22). The legs (32, 40) are biased for convergent movement such that the first cavity (30) is disposed in the binding orientation and the distal part (36) of the first leg (32) disengages the medical device (38).

Description

SECURITY COVER FIELD OF THE INVENTION The present disclosure relates generally to the field of medical assemblies for the administration of fluids and more particularly to safety covers that prevent dangerous exposure to a medical piercing member. BACKGROUND OF THE INVENTION Problems related to unnoticed pickets and perforations from traditional non-safety medical devices are well known in the art of fluid administration which include fluid sampling, percutaneous drug injection and other medical procedures involving the use of medical piercing members such as, for example, hypodermic needles, biopsy needles, intravenous (IV) introducers, trocars, guidewires, thoracentesis needles, etc. Significant attention is focused on the health risks associated with dangerous needle exposure due to the contemporary sensitivity to exposure to AIDS, hepatitis and other blood borne pathogens. These risks are some of the most prevalent occupational health hazards among healthcare professionals. These professionals are in Ref .: 171837 danger of contracting such pathogens transported by the blood of infected patients by inadvertent stings of a contaminated needle from a traditional medical device without safety, for example, used during medical, dental, laboratory, etc. procedures. Attempts to eliminate health hazards related to unnoticed or unwanted bites by a contaminated piercing member have generated a variety of protective devices. In the case of a medical needle, some of these devices use a separate cover cap mounted on the needle after use while other devices use pivoting covers, extendable covers, etc. These devices may require, in a disadvantageous manner, that the practitioner use both hands to implement their protective components. These designs can also be relatively complicated and can consume time when used. The covers that extend have the burden of an additional length, which increases the need for additional space when the device is used. Other designs provide retractable devices that may require considerable additional length, as compared to traditional devices without security, to provide a concealment chamber for the contaminated piercing member. Another disadvantage of the device retractable is the need to manually activate the security feature. The imposed length and the additional manipulation of this system make the retractable systems unsuitable for direct replacement of medical devices without safety. Other designs use a clasp that requires deformation of the piercing member or contacting the tip of the piercing member to provide safety. These types of structures are susceptible to unreliable movement due to their distributions. Additionally, the security feature of such snap devices can be easily overcome which allows reexposure of the tip. Therefore, it would be desirable to correct the disadvantages disadvantages of the prior art with a safety cover that reduces the likelihood of inadvertent or unwanted biting by a contaminated piercing member and at the same time reduces exposure to pathogens. It would be desirable if the security cover can avoid dangerous exposure and at the same time provide a robust system of size, feel and susceptibility to use similar to traditional devices without security. It would be highly desirable if the security cover can be used with various needle-based devices. It is contemplated that the cover of safety is manufactured easily and efficiently. SUMMARY OF THE INVENTION Accordingly, a safety cover is provided that reduces the likelihood of inadvertent or unwanted biting of a contaminated piercing member and reduces exposure to pathogens to correct the disadvantages and drawbacks of the prior art. Desirably, such a security cover avoids dangerous exposure and at the same time provides a robust system similar in size, feel and susceptibility to use traditional devices without security. More desirably, the security cover can be used with various needle-based devices. The safety cover is manufactured and assembled easily and efficiently. The present disclosure solves the related disadvantages and drawbacks experienced in the art. The present disclosure provides a robust safety cover that protects a contaminated tip. The security cover can be configured similar to traditional devices without security in terms of size, feel and susceptibility to use. The security cover is suitable for many types of needle-based devices. The security cover of the present disclosure generates many advantages including increased sensitivity by maintaining a minimum cannula and a length of accommodation such that the use of the safety cover is comparable to that of a traditional product without safety. The security cover also provides improved access to the security mechanism that is embedded within the cube, which does not require a significant change in the overall size of the device compared to an unsecured product. The safety cover automatically releases the catheter hub from the needle. After inserting the needle into the patient, the needle is hidden, for example, by a catheter / hub assembly until it is withdrawn into a protective device of the safety cover. Another advantage is that no additional handling is required. There is no need to press buttons or move slides to activate security features. Normal vessel piercing techniques automatically activate the safety cover. In a particular embodiment, according to the principles of the present disclosure, a safety cover is provided that includes a protective device that includes a piercing member having a proximal end, a distal end and defining a longitudinal axis. A clasp defines a first cavity with a size for movement of the piercing member therethrough and which is oriented on an axis transverse to the longitudinal axis of the piercing member. The first cavity can be moved between a movable orientation and a union orientation. The clasp includes a first limb defining a second cavity with a size for movement of the piercing member therethrough and a distal portion configured to engage a medical device. The clasp further includes a second limb having a bearing surface that engages the piercing member. The first limb and the second limb are biased for convergent movement such that the first cavity is placed in the attachment orientation and the distal portion of the first limb disengages the medical device. The medical device may include a catheter. The first cavity can be rotatable in relation to the longitudinal axis of the piercing member. The first cavity can define a joining surface that couples the piercing member in the joint orientation. The piercing member can be placed within the cavity of the first limb to prevent convergent movement of the limbs. The first cavity may include a slot. Alternatively, the clasp further includes a plate defining the first cavity and which is oriented substantially perpendicular to the extremities. The plate can be rotatable in relation to the longitudinal axis of the axis of the piercing member, between an orientation slidable and a binding orientation so that a surface of the plate defining the cavity engages the piercing member to prevent slidable movement thereof. The first limb may have a proximal portion that is oriented substantially perpendicular to the transverse axis of the first cavity in the movable orientation. The second limb may have a proximal portion that is oriented substantially perpendicular to the transverse axis of the first cavity in the movable orientation. The bearing surface of the second limb can be coupled with the piercing member in the joint orientation to prevent movement of the piercing member. The cavity of the plate may include a slot configuration. The plate may have a greater relative rigidity compared to the extremities. The distal part of the first limb may include a transverse portion defining the second cavity. The distal part of the first limb may alternatively include an arm configured to releasably retain the medical device. The distal portion of the second limb may include a bearing surface that couples to the piercing member. The limbs may be resiliently deflected for convergent movement such that the first cavity is placed in the junction orientation and the distal portion of the first tip disconnects the medical device. The distal part of the first limb may include an arm that is configured to releasably retain the medical device with the outer surface of the housing. Alternatively, the protective device includes a housing that supports the clasp. The housing has an outer surface and can move between a retracted position by means of which the distal end of the piercing member is exposed, and an extended position by means of which the housing encloses the distal end of the piercing member. The clasp can releasably retain the medical device with the housing. The housing can be substantially transparent. The housing may include a camera checking that the tip of the needle entered the bloodstream. The clasp may include a transition portion connecting the plate to the first limb. The transition portion is configured to engage an interior surface of the housing to facilitate rotation of the plate cavity. The transition portion can couple an inner surface of the housing to facilitate the clamping engagement of the cavity of the plate with the needle. In an alternative modality, the first limb and the second limb are deflected for movement convergent such that the first cavity is placed in the junction orientation and the distal part of the first limb is decoupled from the second limb and the medical device. In another alternative embodiment, the clasp includes a second limb having a network of deflection elements configured to deflect the clasp and a bearing surface that engages the piercing member. The deviation elements of the network define channels therebetween and are connected to form a continuous spring element. BRIEF DESCRIPTION OF THE FIGURES The following and other features and advantages of the present description will be more fully understood from the following detailed description of the exemplary embodiments, taken in conjunction with the accompanying drawings, in which: Figure 1 is a perspective view of a particular embodiment of a security cover, in accordance with the principles of the present disclosure; Figure 2 is a perspective view of the security cover shown in Figure 1, with separate parts; Figure 3 is an exploded side view of a snap and needle of the security cover shown in Figure 1; Figure 4 is an isometric perspective view of the clasp and needle shown in Figure 3, in a movable orientation; Figure 5 is an isometric view in perspective of the clasp and needle shown in Figure 3, in a joint orientation; Figure 6 is an exploded view in lateral cross section of a security cover shown in Figure 1, in a movable orientation; Figure 7 is an exploded view in lateral cross section of the safety cover shown in Figure 1, in a joint orientation; Figure 8 is an enlarged perspective view of an alternative embodiment of the clasp shown in Figure 3; Figure 9 is an enlarged perspective view of another alternative embodiment of the clasp shown in Figure 3; Figure 10 is an enlarged perspective view of another alternative embodiment of the clasp shown in Figure 3; Figure 11 is an exploded side view of an alternative embodiment of the clasp and needle shown in Figure 3, in a movable orientation; Figure 12 is an exploded side view of the clasp and the needle shown in figure 11, in a joining orientation; Figure 13 is an enlarged side view of the indicated area of the detail shown in Figure 11; Figure 14 is an enlarged side view of the indicated area of the detail shown in Figure 12; Fig. 15 is an exploded side view of an alternative embodiment of the snap and needle shown in Fig. 3, in a movable orientation; Figure 16 is an exploded top view of the clasp shown in Figure 15; Figure 17 is an exploded side view of the clasp and needle shown in Figure 15, in a joint orientation; Figure 18 is an exploded top view of the clasp shown in Figure 17; Figure 19 is a perspective view of an alternative embodiment of the security cover, in accordance with the principles of the present disclosure; Figure 20 is a perspective view of the security cover shown in Figure 19 with separate parts; Figure 21 is a perspective view of a snap of the security cover shown in Figure 19; Figure 22 is an alternative perspective of the brooch shown in Figure 21; Figure 23 is a perspective view of a housing section of the security cover shown in Figure 19; Figure 24 is a perspective view of an alternative housing section of the security cover shown in Figure 19; Figure 25 is an exploded side view of the safety cover shown in Figure 19, in a movable orientation with a housing section removed; Figure 26 is an exploded side view of the safety cover shown in Figure 19, in a joint orientation with a removed housing section; Figure 27 is a perspective view of an alternative embodiment of the clasp shown in Figure 21; Figure 28 is an alternative perspective view of the clasp shown in Figure 27; Fig. 29 is a perspective view of another alternative embodiment of the clasp shown in Fig. 21; and Figure 30 is an alternative perspective view of the brooch shown in Figure 29. DETAILED DESCRIPTION OF THE EXEMPLARY MODALITIES The exemplary embodiments of the cover of Safety and described methods of operation are discussed in terms of medical piercing members such as, for example, hypodermic needles, biopsy needles, intravenous (IV) introducers, trocars, guidewires, thoracentesis needles, etc., for infusion of intravenous fluids, medication infusion or fluid sampling and more particularly in terms of a safety cover used with a needle cannula that avoids dangerous exposure to a needle tip that includes, for example, inadvertent spikes of needles. It is considered that the present description, however, finds application in a wide variety of cannula needles and devices for the infusion of preventive medications, drugs, therapeutic substances, etc., to a subject. It is also considered that the present description can be used for collection of bodily fluids including those used during the procedures in relation to phlebotomy, digestive, intestinal, urinary, veterinary, etc. It is contemplated that the security cover can be used with other medical needle applications that include but are not limited to fluid infusion, fluid collection, catheters, catheter introducer, guide wire introducer, spinal and epidural biopsy, apheresis , dialysis, blood donation, Veress needles, Huber needles, etc.

In the discussion that follows, the term "proximal" refers to a portion of a structure that is closer to the physician, and the term "distal" refers to a portion that is remote from the physician. As used herein, the term "subject" refers to a patient receiving infusions or having blood and / or fluid collected therefrom using the security cover. According to the following description, the term "physician" refers to an individual who administers an infusion, who performs fluid sampling, who installs or removes a needle cannula from a safety cover and which may include a personal support . The following discussion includes a description of the security cover, followed by a description of the method of operation of the security cover according to the following description. Reference will now be made in detail to the exemplary embodiments of the description, which are illustrated in the appended figures. Returning now to the figures, where similar components are designated by similar reference numbers through the various views. Referring initially to Figures 1-7, a security cover 20 is illustrated that includes a protective device, constructed in accordance with the principles of the present disclosure. The security cover 20 includes a piercing member, such as, for example, a needle cannula 22. The needle cannula 22 has a proximal end such as, for example, a hub 24, a distal end 26 and defines a longitudinal axis x. It is contemplated that the piercing member may alternatively include, such as, for example, hypodermic needles, biopsy needles, intravenous (IV) introducers, trocars, guide wires, thoracentesis needles, etc. It is further contemplated that the needle cannula 22 has a smooth outer surface. The safety cover 20 is advantageously configured to provide passive protection after removal of a piercing member when it is removed from a fastener. A clasp 28 defines a first cavity such as, for example, an opening 30 having a size for the movement of the needle cannula 22 therethrough. The opening 30 is oriented on an axis transverse to the longitudinal axis x. The y-axis is oriented at an angle of approximately 90 ° relative to the longitudinal axis x. The opening 30 is positioned for movement such as, for example, rotational movement between a movable orientation such as, for example, a sliding orientation (Figure 4) which corresponds to the y axis and a joint orientation (Figure 5) corresponding to an inclination a in relation to the y axis. It is considered that the opening 30 may be oriented in various degrees of inclination in accordance with the requirements of a particular application. The clasp 28 includes a first end 32 defining a second cavity such as, for example, the opening 34 with a size for movement of the needle cannula 22 therethrough. The first extremity 32 has a distal portion 36 that is configured to couple a medical device such as, for example, a catheter 38. The clasp 28 includes a second end 40 having a bearing surface 42 that engages the needle cannula 22. The first limb 32 and the second limb 40 are resiliently deflected for convergent movement such that the opening 30 is positioned in the attachment orientation and the distal portion 36 decouples the catheter 38 as will be discussed. This configuration advantageously reduces the presentation of an inadvertent or unwanted sting to a physician from the contaminated piercing member to reduce exposure to pathogens. It is considered that the limbs 32 and 40 can be formed monolithically, can be connected integrally, can be joined in an articulated manner, etc., with the clasp 28. It is contemplated that the security cover of the present disclosure can be used with various medical devices. such as, for example, fluid infusion, fluid collection, guidewire introducer, spinal and epidural biopsy, thoracentesis, apheresis, dialysis, blood donation, Veress needles, Huber needles, etc.

The components of the security cover 20 can be made of a material suitable for medical applications such as, for example, polymeric materials or metals, such as stainless steel, depending on the particular medical application and / or the physician's preference. Semi-rigid and rigid polymeric materials as well as resilient materials such as molded medical grade polypropylene are contemplated for manufacture. However, a person skilled in the art will realize that other materials and methods of manufacture suitable for assembly and fabrication may also be appropriate, in accordance with the present disclosure. The protective device of the security cover 20 includes a housing 44 that supports clasps 28. The housing 44 has an outer surface 46 and an upper section 48 and a lower section 50 are inclined. The housing 44 can be moved between a retracted position (Figure 6), whereby the distal end 26 of the needle cannula 22 is exposed, and an extended position (Figure 7) by means of which distal end 26 of the needle cannula 22 is enclosed within the housing 44. The housing 44 is substantially transparent and defines a rapid chamber 52 to visualize the fluid returning to the insertion of the catheter 38 with a subject. It is considered that sections 48 and 50 of housing can be configured in various ways and have different sizes such as, for example, rectangular, spherical, etc. It is further contemplated that the housing sections 48 and 50 can be joined by any method such as, for example, press fit, with adhesives, solvent welding, thermal welding, ultrasonic welding, screwing, riveting, etc. Alternatively, housing 44 can be formed monolithically or can be integrally assembled from multiple housing sections and can be substantially non-transparent, opaque, etc. The housing sections 48 and 50 may include ribs, reinforcements, etc., to facilitate handling of the security cover 20. The catheter 38 includes a catheter hub 54 that is placed around the needle cannula 22. The clasp 28 removably retains the catheter hub 54 with the housing 44. The catheter 38 has an introducer 56 extending from the catheter hub 54 for slidable support of the needle cannula 22 and percutaneous application to a subject (not shown) . The introducer 56 has a distal end 58 that may be protected with a separate protective device such as, for example, the safety cover described herein. The outer surface of the catheter hub 54 facilitates handling of the catheter 38. The brooch 28 is monolithically formed and includes a aperture plate 60 defining an aperture 30. The aperture 30 is oriented substantially perpendicular to the extremities 32 and 40 in the slidable orientation. The aperture plate 60 has a generally flat rectangular configuration with sufficient stiffness to produce forces to join the needle cannula 22, as will be discussed. It is contemplated that the aperture plate 60 has a greater relative rigidity than the ends 32 and 40. It is considered that the aperture plate 60 may have an arcuate, corrugated surface, etc. It is further contemplated that the aperture plate 60 may have various degrees of stiffness, in accordance with the requirements of a particular application. The opening 30 is formed within the opening plate 60 for slidable engagement with the needle cannula 22 during movement between the retracted position and the extended position of the housing 44. The opening 30 and the opening plate 60 are oriented substantially perpendicular to each other. the needle cannula 22 in such a manner that the snap 28 moves freely therethrough. The opening 30 includes a joining surface 62 formed therethrough which engages the needle cannula 22 to prevent movement thereof in the extended position of the housing 44. The extended position, as will be discussed, the opening 30 is tilted or oscillates, in relation to the longitudinal axis x, to the joint orientation in such a way that the joining surface 62 engages or holds within the outer surface of the needle cannula 22. The connection of the opening 30 with the needle cannula 22 is facilitated by the frictional force generated between the joint surface 62 and the needle cannula 22. This frictional engagement prevents axial movement of the needle cannula 22, in a proximal or distal direction, relative to the housing 44 in the extended position. This configuration advantageously avoids dangerous exposure to the needle cannula 22. It is contemplated that the joining surface 62 may include sharp edges to increase frictional engagement. It is further contemplated that the friction force may be varied by doctors who can alter it such as, for example, the size of the opening 30, the diameter of the needle cannula 22, the thickness of the opening plate 60, etc., depending on the particular requirements of an application. It is contemplated that the coupling to prevent movement of the needle cannula 22 may include penetration, interference, etc. It is considered that the opening 30 can have various geometric configurations such as radial, polygon, etc. It is further contemplated that the opening 30 may define an open cavity within the aperture plate 60 such as, for example, a "U" shape, a slot (Figure 9), open to one or a plurality of apertures. edges of the opening plate 60, etc. In the slidable orientation, the first end 32 extends distally from the opening plate 60. The first end 32 has a proximal portion 64 that is oriented perpendicularly to the axis y of the opening plate 30. This perpendicular orientation facilitates the tilting of the waste opening plate 60 in a sliding orientation or a joining orientation. It is considered that the first end 32 can be oriented differently with the opening plate 60 and can be flexibly extended therefrom. The distal portion 36 of the first limb 32 includes a transverse portion 66 defining the opening 34. The opening 34 is formed within the transverse portion 66 for slidable engagement with the needle cannula 22 during movement between the retracted position and the position of the housing 44. It is considered that the opening 34 can have various geometric configurations such as radial, polygon, etc. It is further contemplated that the opening 34 may define an open cavity within a transverse portion 66 such as, for example, in the form of a "U" groove, open to one or a plurality of edges of the transverse portion 66, etc. The limbs 32 and 40 are biased for convergent movement, which causes the limb 32 move transverse to the longitudinal axis x. In the slidable orientation, the needle cannula 22 is placed in the opening 34 to prevent said transverse movement of the first limb 32. The distal portion 36 includes an arm 68 that is configured to releasably retain the catheter hub 54 with the surface 46 exterior of the housing 44. In the slidable orientation, the arm 68 is positioned such that a hook portion 70 thereof retains a rim 72 of the catheter hub 54. In the joint orientation, the needle cannula 22 passes out of the opening 34 and the distal part 36 is free to move transversely due to the deviation of the limbs 32, 40. The hook portion 70 moves in a similar manner transversely to the 72 flange of release. The catheter 38 in this manner is detachable from the housing 44. The distal portion 36 also includes a clearance opening 35 positioned adjacent and distal to the distal end 26 of the needle cannula 22. In the joint orientation, the distal end 26 is in longitudinal alignment with the gap 35. The gap 35 prevents the coupling of the distal portion 36 with the distal end 26. It is contemplated that the distal portion 36 does not include the gap 35. In the slidable orientation, the second end 40 extends distally from the opening plate 60. The second limb 40 has a proximal part 74 that is oriented perpendicularly in relation to the axis y of the opening plate 60. This perpendicular orientation facilitates the tilting of the waste opening plate 60 in a sliding orientation or a joining orientation. It is contemplated that the second end 40 may be oriented differently with the opening plate 60 and may be flexibly extended therefrom. In the slidable orientation, the abutment surface 42 engages the outer surface of the needle cannula 22 to balance the convergent spring forces generated by the limbs 32 and 40. Correspondingly, the limbs 32 and 40 are balanced around the cannula. 22 of needle so that the opening 30 of the • opening plate 60 is maintained in a sliding orientation. In the joint orientation, the needle cannula 22 passes through the opening 34 and the abutment surface 42 facilitates the inclination of the clasp 28. As the ends 32 and 40 are deflected in a convergent manner, the coupling surface 42 engages the needle cannula 22 causing the clasp 28 to rotate, relative to the longitudinal axis x, the opening 30 within the union orientation with the needle cannula 22. The bearing surface 42 also engages the water cannula 22 in the attachment orientation to prevent movement of the needle cannula 22 in the proximal and distal directions. This configuration advantageously immobilizes the distal end 26 of the needle cannula 22 in a protected configuration without requiring any alteration on the outer surface of the needle. The clasp 28 also includes a transition portion 76 connecting the opening plate 60 with the first end 32. The transition portion 76 is configured to engage an interior surface 78 of the housing 44 to facilitate rotation, relative to the longitudinal axis x of the opening 30. The transition portion 76 engages the inner surface 78 to increase the fastening engagement of the surface 62 of the opening 30 with the needle cannula 22. Similarly, the housing 44 includes interior surfaces 80, 82 and 84 that are configured to engage correspondingly adjacent portions of the clasp 28. The clasp 28 engages the interior surfaces 80, 82 and 84 to prevent separation of the clasp 28 and the needle cannula 22 as well as to also avoid reexposure of the distal end 26. It is contemplated, however, that the clasp 28 of the security cover 20 can be used to provide the protective security features without a protective device such as, for example, the housing 44. For example, the clasp 28 can be used as a self-sustaining structure usable with a particular medical device, in accordance with the principles of the present description. With reference to Figure 8, an alternative embodiment of the clasp 28 is shown which includes a first limb 132 and a second limb 140. The limbs 132 and 140 float on opposite sides of a piercing member (not shown) configured for sliding movement a through the opening 130 defined in an opening plate 160. The clasp 28 includes a support surface 142 and a hook portion 170, similar to those elements described above. Alternatively, as shown in Figure 9, the opening plate 160 defines a slot 230. The slot 230 allows a piercing member such as, for example, a needle cannula 22 described above to be placed therein. Such a configuration advantageously minimizes potential damage to the distal end 26 of the needle cannula 22. With reference to Figure 10, there is shown another alternative embodiment of the clasp 28 that includes a first limb 332 and a second limb 340. The clasp 28 defines an opening 330 in an aperture plate 360. The opening 330 has a size for slidable movement of a piercing member (not shown) therethrough, similar to that described above and oriented on an axis perpendicular to the longitudinal axis of the piercing member, in the slidable orientation.

The first limb 322 has a bowed proximal portion 364 and a distal portion 336. The distal portion 336 defines a slot 334 and a hook portion 370. Similar to those elements described in the foregoing, the second limb 340 has a bowed proximal portion 374 and a bearing surface 342 that couples the piercing member, similar to the bearing surface 42 described above. The distal portion of the second limb 340 releasably engages a retainer 333 of the first limb 332 during the sliding movement of the piercing member to hold the clasp 28 in the slidable orientation. In the attachment orientation of the brooch 28 similar to that described, the limbs 332 and 340 are deflected for convergent movement such that the extremity 332 moves transversely and downwardly. The distal portion of the second limb 340 in this manner is released and disengaged from the retainer 333 to facilitate rotation of the first limb 332 and the opening 330 to the joint orientation. Hook portion 370 releases the medical device attached thereto. In operation, the security cover 20, similar to that described in accordance with the principles of the present descriptions and Figures 1-7, is provided for use with the catheter 38. The components of the security cover 20 are manufactured, properly sterilize and they are prepared in some other way for storage, transportation and use. It is contemplated that the security cover 20 and the medical device used herein are prepared in a ready-to-use configuration such that the housing 44 is in the retracted position and the distal end 26 of the needle cannula 22 is further exposed. beyond the distal end 58 of the introducer 56. It is contemplated that the safety cover 20 can be prepared in alternative configurations before use. The catheter 38 is retained with the safety cover 20 by the releasable retention of the catheter flange 72 by the hook portion 70. The physician (not shown) manipulates the security cover 20 and the catheter 38 as a unit. The housing 44 is in the retracted position and the opening 30 of the clasp 28 is in a slidable orientation, as described above and as shown in Figure 6. The needle cannula 22 extends completely in relation to the cover 20 of safety such that the introducer 56 of the catheter 38 is placed around the needle cannula 22. In catheter 38 it is inserted into a subject, as is known to those skilled in the art. Alternative medical devices may be used with the security cover 20 to perform the corresponding medical procedures by a physician, as described above.

At the end of the medical procedure using the catheter 38, the physician manipulates the hub 24 with one hand, and manipulates the housing 44 / catheter hub 54 with the other. The needle cannula 22, by manipulating the hub 24, retracts proximally so that the housing 44 extends into the extended position. The opening 30 of the clasp 28 is held in the slidable orientation so that the needle cannula 22 slides through the openings 30 and 34. The limbs 32 and 40 extend from the opening plate 60 parallel to the longitudinal axis x , in this configuration, the limbs 32 and 40 are balanced around the needle cannula 22 via engagement with the bearing surface 42 to facilitate sliding movement, as described above. As the housing 44 is manipulated to the extended position, the needle cannula 22 leaves the opening 34, as shown in FIG. 7. The ends 32 and 40 are deflected in a convergent manner so that the abutment surface 42 engages the cannula. 22 which causes the clasp 28 to rotate the opening plate 60 at an inclination a (FIG. 3) in relation to the longitudinal axis and, as described. Correspondingly, the opening 30 rotates in the connection orientation with the needle cannula 22 in such a manner that the surface 62 joins against the outer surface of the needle cannula 22.

The attachment coupling of the surface 62 with the needle cannula 22 retains the distal end 26 in a protective configuration that prevents proximal and distal movement thereof in relation to the clasp 28. The bearing surface 42 also engages the needle cannula 22 in the joint orientation to prevent movement of the needle cannula 22 in the proximal and distal directions. The transition portion 76 engages the interior surface 78 of the housing 44 to increase the clamping engagement of the surface 62 with the needle cannula 22. The inner surfaces 80, 82 and 84 of the housing 44 couple adjacent portions of the clasp 28 to prevent separation of the clasp 28 and the needle cannula 22, as well as the re-exposure of the distal end 26. In this way, if the housing 44 is dropped or inadvertently pushed or pulled, the distal end 26 will not be removed from the protective configuration. As the limbs 38 and 40 deviate in a convergent manner, the hook portion 70 moves transversely to release the rim 72 from the catheter hub 54, as discussed above. The catheter 38 in this manner is detachable from the safety cover 20 and the needle cannula 22 is held securely by the clasp 28 and the housing 44. The safety cover 20 can be discarded. With reference to figures 11-14, another is shown alternative embodiment of the clasp 28 including a first limb 432 and a second limb 440, similar to those described above. The clasp 28 includes an aperture plate 460 defining an aperture 430. The aperture 430 is formed within the aperture plate 460 for slidable engagement with a needle cannula 422 during movement between the retracted position and the extended position of the housing 44 (not shown). The opening 430 and the aperture plate 460 are oriented at an angle, relative to the longitudinal axis x such that the clasp 28 moves freely along the needle cannula 422 in the slidable orientation, as shown in FIG. Figure 11. The opening 430 includes flared joining surfaces 462 that are formed around it so as to engage the needle cannula 422 to prevent proximal and distal movement thereof in the extended position of the housing 44. In the extended position, the opening 430 is rotated to the joining orientation (Figure 12), substantially perpendicular to the longitudinal axis x, such that the flared joining surfaces 462 engage or attach to the cannula 422, in a manner similar to that described in previous. In the slidable orientation, the first limb 432 extends distally from the aperture plate 460. The first limb 432 has a proximal portion 464 that is extends along the longitudinal axis x. A distal portion 436 of the first limb 432 includes a first transverse portion 466 and a second transverse portion 467. The first transverse portion 466 defines opening 434, 435 and the second transverse portion defines opening 434A and 435A. The openings 434 and 434A are configured for slidable engagement with the needle cannula 422 during movement between the retracted position and the extended position of the housing 44. The openings 435 and 435A are positioned adjacent and distal to the distal end of the needle cannula 422. in the union orientation. In the joint orientation as shown in Figure 12, the distal end of the needle cannula 422 is in longitudinal alignment with the openings 435 and 435A. The openings 435 and 435A prevent engagement of the distal portion 436 with the distal end of the needle cannula 422. In the slidable orientation, the second end 440 extends distally at an angle, relative to the longitudinal axis x, from the opening plate 460. The second end 440 has an opening 474 configured for slidable engagement with the needle cannula 422 such that the snap 28 freely moves along the needle in the slidable orientation, as shown in Figure 13. The opening 474 includes flared junction surfaces 475 that are formed around it and that couple to the needle cannula 422 to prevent proximal and distal movement thereof in the extended position of the housing 44. In the extended position, the opening 474 is rotated to an orientation that is substantially perpendicular, relative to the longitudinal axis x, at the Binding orientation such that flared joining surfaces 475 engage or clamp on the outer surface of the needle cannula 422 (Figure 14) similar to that described above. The needle cannula 422 is positioned within the openings 430, 474, 434, 434A to balance the expansion spring force generated by the limb 432 and the convergent spring force generated by the limb 440. In the joint orientation, the Needle cannula 422 passes out of openings 434, 434A to facilitate tilting of brooch 28. As end 432 expands, brooch 28 rotates, relative to longitudinal axis x, and end 440 converges toward opening plate 460 in such a way that the openings 430 and 474 rotate to the joint orientation with the needle cannula 422. The distal portion of the second limb 440 releasably engages a detent 433 of the first limb 432 during the slidable movement of the needle cannula 422 to hold the clasp 28 in the slidable orientation. In the joining orientation, the distal portion of the second limb 440 releases and disengages the retainer 433 to facilitate rotation of the first limb 432 and the convergence of the limb 440. In the slidable orientation, the needle cannula 422 is placed in the openings 434, 434A to prevent transverse movement of the first limb 432. The distal part 436 includes a hook portion 470 retaining a medical device (not shown) attached to housing 44, similar to that described above. In the attachment orientation, the needle cannula 422 passes through the openings 434 and 434A and the distal portion 436 is free to move transversely due to the expansion of the limb 432. The hook portion 470 moves similarly transversely to release the medical device, which is then detachable from the housing 44. Referring to Figures 15-18, another alternative embodiment of the clasp 28 is shown including a first limb 532 and a second limb 540, similar to those described above. The clasp 28 includes an aperture plate 560 defining an opening 530. The aperture 530 is formed within the aperture plate 560 for slidable engagement with a needle cannula 522 during movement between the retracted position and the extended position of the housing 44 (not shown). The aperture 530 and the aperture plate 560 are oriented at an angle, relative to the longitudinal axis x, such that the clasp 28 moves freely along the needle cannula 522 in the slidable orientation, as shown in Figure 15. The opening 530 includes flared joining surfaces 562 that are formed around it that engage the needle cannula 522 to prevent movement proximal and distal thereof in the extended position of the housing 44. In the extended position, the opening 530 is rotated to the joint orientation (FIG. 17), substantially perpendicular to the longitudinal axis x, such that the joining surfaces 562 flares are attached or clamped on the outer surface of the needle cannula 522, in a manner similar to that described above. In the slidable orientation, the first end 532 extends distally from the opening plate 560. The first limb 532 has a proximal portion 564 extending along the longitudinal axis x. A distal portion 536 of the first limb 532 includes a first transverse portion 566. The transverse portion 566 defines opening 534. The opening 534 is formed within the transverse portion 566 for slidable engagement with the needle cannula 522 during movement between the retracted position and the extended position of the housing 44. In the slidable orientation, the second end 540 extends distally at an angle, relative to the longitudinal axis x, from the opening plate 560. The second end 540 has an opening 574 configured for slidable engagement with needle cannula 522 such that the snap 28 freely moves along the needle in the slidable orientation, as shown in Figure 15. The opening 574 includes surfaces 575 flared unions that form around it and engage the needle cannula 522 to prevent proximal and distal movement thereof in the extended position of the housing 44. In the extended position, the opening 574 is rotated to an orientation that is substantially perpendicular, in relation to the longitudinal axis x, in the attachment orientation such that the flared joining surfaces 575 are engaged or clamped on the outer surface of the needle cannula 522, in a manner similar to that described in FIG. previous. The needle cannula 522 is positioned within the openings 530, 574 and 534 to balance the convergent spring force generated by the limbs 532, 540. In the joint orientation, the needle cannula 522 passes through the opening 534 to facilitate the inclination of the clasp 28. As the extremity 532 converges, the clasp 28 rotates, relative to the longitudinal axis x, and the extremity 540 converges towards the opening plate 560 in such a way that the opening 530, 574 rotates in the union orientation with cannula 522 of needle. A distal portion 541 of the second extremity 540 is releasably engaged to a detent 553 of the first end 532 (FIG. 16) during the slidable movement of the needle cannula 522 to hold the clasp 28 in the slidable orientation. The detent 533 is positioned within a channel 535 defined within the proximal portion 564. In the joint orientation, the first limb 532 moves transverse to the longitudinal axis x such that the distal portion 541 is released and disengaged from the detent 533 (FIG. 18) to facilitate convergence of the limb 540. In the slidable orientation, the needle cannula 522 is placed in the opening 534 to prevent transverse movement of the first end 532. The distal portion 536 includes a hook portion 570 that retains a medical device (not shown) attached to the housing 44, similar to that described in FIG. the above. In the attachment orientation, the needle cannula 522 passes through the opening 534 and the distal portion 536 is free to move transversely due to the convergence of the limb 532. The hook portion 570 similarly moves transversely to release the device doctor, which is then removable from the housing 44. Referring to Figures 19-26, an alternative embodiment of the security cover 20 is shown, similar to the structure and method of use described in the foregoing. The Needle cannula 22 has a hub 624, a distal end 26 and defines a longitudinal axis x. It is contemplated that the needle cannula 22 may be fabricated from stainless steel in a range of sizes such as, for example, 16 to 26 gauge, in accordance with the requirements of a particular application. The needle cannula 22 can be provided in various lengths such as 56 mm (2.2 inches) to 91 mm (3.6 inches), although other sizes are also considered. The needle cannula 22 may include a notched sidewall. The hub 624 may be sufficiently transparent to facilitate checking that the tip of the needle entered the bloodstream and the needle cannula 22 cooperates with the catheter 38 in such a way that the catheter 38 is sufficiently transparent to facilitate checking that the tip of the needle entered the bloodstream. A clasp 628 defines an opening 630, similar to the opening 30 discussed above, and is positioned for rotational movement between a slidable orientation (figure 25) that corresponds to the y axis, and a joining orientation (figure 26) that corresponds to an inclination a in relation to the y axis. The clasp 628 includes a first end 632 defining an opening such as, for example, an activating hole 634 having a size for movement of the needle cannula 22 therethrough. The first limb 632 has a distal portion 636 that is configured to couple the catheter 38. The clasp 628 includes a second end 640 having a bearing surface 642 that engages the needle cannula 22. The first limb 632 and the second limb 640 are deflected recyltely for convergent movement such that the opening 630 is placed in the attachment orientation and the distal portion 636 decouples the catheter 38. The second limb 640 includes a network 641 that forms a continuous spring element for facilitating resilient deflection of the limbs 632, 640 and the convergent movement resulting from the clasp 628. The net 641 resiliently deflects and includes deflection elements such as, for example, spring element 643 that are connected to form a 641 network continues. The spring elements 643 define channels 645 therebetween. This configuration advantageously provides more resilience without requiring additional material for manufacturing and thus manufacturing efficiency is improved. The network 641 also reduces the stress concentrations in the clasp 628 due to the continuous design and reduces the drag on the needle cannula 22. The network 641 is considered to include one or a plurality of elements 643. The security cover 20 includes a housing 644 that supports a clasp 628. The housing 644 has an exterior surface 646 and includes an upper section 648 (figure 23) and a lower section 650 (figure 24). The housing 644 can be moved between a retracted position and an extended position, similar to that discussed in the above with respect to Figures 6 and 7. The clasp 628 removably retains the catheter hub 54 within the housing 644. The snap 628 is monolithically and includes an aperture plate 660 defining the aperture 630. The aperture plate 660 has a generally planar rectangular configuration with sufficient rigidity to produce forces for attachment of the needle cannula 22. In the slidable orientation, as shown in Figure 25, the first limb 632 extends distally from the aperture plate 660. The first end 632 has a proximal portion 664 that is oriented perpendicularly to the axis y of the opening plate 660. The distal opening 636 of the first limb 632 includes a transverse portion 667 defining the opening 634. The opening 634 is formed within the transverse portion 667 for slidable engagement with the needle cannula 22 during movement between the retracted position and the position of the housing 644. The limbs 632 and 640 are biased for convergent movement, which causes the end 632 to move transverse to the longitudinal axis x. In the sliding orientation, the needle cannula 22 is placed in a opening 634 to prevent said transverse movement of the first end 632. The distal portion 636 includes an arm 668 that is configured to releasably retain the catheter hub 54 with the outer surface 646 of the housing 644. In the slidable orientation, the arm 668 is positioned in such a manner that a hook portion 670 thereof retains a rim 72 of the catheter hub 54. In the joint orientation, as shown in Figure 26, the needle cannula 22 passes out of the opening 634 and the distal portion 636 is free to move transversely due to the deviation of the ends 632, 640. The portion 670 of The hook similarly moves transversely to the release flange 72. The catheter 38 is then detachable from the housing 644. The distal portion 636 also includes an opening 635 of clearance placed adjacent the distal end 26 of the needle cannula 22. In the joint orientation, the distal end 26 is in alignment and extends through the gap 635. In the slidable orientation, the second end 640 extends distally from the opening plate 660. The second limb 640 has a proximal portion 674 that is oriented perpendicularly to the y-axis of the aperture plate 660. This perpendicular orientation facilitates the tilting of the waste opening plate 660 in a sliding orientation or in a union orientation. In the slidable orientation, the bearing surface 642 couples the outer surface of the needle cannula 22 to balance the convergent spring forces generated by the ends 632, 640 and the network 641. Correspondingly, the ends 632, 640 are balanced around the needle cannula 22 in such a manner that the opening 630 of the opening plate 660 is held in a slidable orientation. In the joint orientation, the needle cannula 22 passes out of the opening 634 and the support surface 642 facilitates the tilt of the clasp 628. Since the limbs 632, 640 deviate in a convergent manner due to the resilience of the elements 643 of the network 641, the support surface 642 engages the needle cannula 22 which causes the clasp 628 to rotate, relative to the longitudinal axis x, the opening 630 in the union orientation with the needle cannula 22. The support surface 642 also couples the needle cannula 22 in the attachment orientation to prevent movement of the needle cannula 22 in the proximal and distal directions. This configuration advantageously provides a bidirectional immobilization which immobilizes the distal end 26 of the needle cannula 22 in a protected configuration without requiring any alteration on the outer surface of the needle. The previous configuration of the 628 clasp does not require operative coupling with the housing 644 to actuate the protective features of the clasp 628. The clasp 628 also includes a transition portion 676 that connects the opening plate 660 with the first end 632. The transition portion 676 is configured to engage a surface 678 interior of the housing section 650 for facilitating rotation, relative to the longitudinal axis x of the opening 630. The interior surface 678 is placed in alignment parallel with the axis y. The transition portion 676 engages the inner surface 678 to increase the fastening engagement of the surface 662 of the opening 630 with the needle cannula 22. Similarly, the housing 644 includes interior surfaces 680, 682, and 684 that are configured to correspondingly engage adjacent portions of the clasp 628. The clasp 628 engages the interior surfaces 680, 682, and 684 to prevent separation of the clasp 628 and the fastener 628. needle cannula 22 as well as a reexposure of distal end 26. With reference to Figures 27 and 28, an alternative embodiment of the clasp 628 is shown including a second limb 740 having a bearing surface 742, similar to that described above. Tip 740 includes a network of spring elements 743 defining a channel 745. Channel 745 has an increased area to reduce force exerted on the needle cannula 22 (not shown). With reference to Figures 29 and 30, there is shown another alternative embodiment of the snap 628, similar to the one described, which includes a second end 840. The second end 840 has a net 841 including layers 843 and a support surface 842. The layers 843 provide additional material such that the force exerted on the clasp 628 is dispersed through the layers. The layers 843 disperse the load on the clasp 628 to reduce stress concentrations on the clasp 628 and decrease the pulling force with the needle cannula 22. It will be understood that various modifications may be made to the embodiments described herein. Therefore, the above description should not be considered as limiting but simply as an exemplification of the various modalities. Those skilled in the art will be able to perceive other modifications within the scope and spirit of the claims appended hereto. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (40)

1. CLAIMS Having described the invention as above, the content of the following claims is claimed as property: 1. A safety cover, characterized in that it comprises: a piercing member having a distal end and defining a longitudinal axis; and a clasp defining a first cavity having a size for movement of the piercing member therethrough and which is oriented on an axis transverse to the longitudinal axis of the piercing member, the first cavity being movable between a movable orientation and a union orientation; the clasp includes a first limb defining a second cavity having a size for the movement of the piercing member therethrough and a distal portion configured to engage a medical device, the clasp further includes a second limb having a surface of support that engages the piercing member; wherein the first limb and the second limb are deviated for convergent movement such that the first cavity is placed in the joint orientation and the distal part of the first limb uncoupled the medical device. The safety cover, according to claim 1, characterized in that the first cavity is rotatable in relation to the longitudinal axis of the piercing member. 3. The security cover, according to claim 1, characterized in that the first cavity defines a joining surface that couples the piercing member in the joining orientation. The security cover, according to claim 1, characterized in that the clasp further includes a plate defining a first cavity and which is oriented substantially perpendicular to the ends. The safety cover, according to claim 1, characterized in that the first end has a proximal part that is oriented substantially perpendicular to the transverse axis of the first cavity in the movable orientation. The security cover, according to claim 1, characterized in that the second end has a proximal part that is oriented substantially perpendicular to the transverse axis of the first cavity in the movable orientation. .7. The security cover, according to claim 1, characterized in that the distal part of the first limb includes a transverse portion defining the second cavity. The security cover, according to claim 1, characterized in that the distal part of the first limb includes an arm configured to releasably retain the medical device. 9. The security cover, according to claim 1, characterized in that the clasp is placed inside a housing. The security cover, according to claim 9, characterized in that the housing can move between a retracted position by which the distal end of the piercing member is exposed, and an extended position by means of which the housing encloses to the distal end of the piercing member. The security cover, according to claim 9, characterized in that the clasp removably retains the medical device with the housing. 12. The security cover, according to claim 9, characterized in that the housing is substantially transparent. The security cover, according to claim 9, characterized in that the housing includes a chamber for checking that the tip of the needle entered the bloodstream. 14. The security cover, according to claim 1, characterized in that the medical device includes a catheter. A safety cover, characterized in that it comprises: a piercing member having a proximal end, a distal end and defining a longitudinal axis; a housing that has an exterior surface; and a clasp including a plate oriented on an axis transverse to the longitudinal axis of the piercing member and defining a cavity having a size for movement of the piercing member therethrough, the cavity of the plate being rotatable in relation to the longitudinal axis of the piercing member, between a sliding orientation and a binding orientation, whereby the surface of the plate defining the cavity engages the piercing member to prevent slidable movement thereof, the clasp includes a first extremity that is extends from the plate and having a proximal part and a distal part, the distal part defines a cavity having a size for movement of the piercing member therethrough and which is configured to attach a medical device, the clasp includes a second limb extending from the plate and having a proximal part and a distal part, the distal part of the second limb includes a support surface that couples to the piercing member; wherein the limbs are resiliently deflected for convergent movement so that the first cavity is placed in the attachment orientation and the distal part of the first limb disengages the medical device. 16. The safety cover, according to claim 15, characterized in that the piercing member is placed inside the cavity of the first limb to prevent convergent movement of the limbs. The safety cover, according to claim 15, characterized in that the housing is movable between a retracted position in which the distal end of the piercing member is exposed, and an extended position by means of which the distal end of the piercing member is enclosed within the housing. The security cover, according to claim 15, characterized in that the distal part of the first end includes an arm that is configured to releasably retain the medical device with the outer surface of the housing. 19. The security cover, according to claim 15, characterized in that the surface of support of the second end engages the piercing member in the joint orientation to prevent movement of the piercing member. 20. A safety needle cover apparatus, characterized in that it comprises: a needle having a proximal end, a distal end and defining a longitudinal axis; a housing having an outer surface and movable between a retracted position by means of which the distal end of the needle is exposed, and an extended position by means of which the distal end of the piercing member is enclosed within the housing, the housing is substantially transparent and defines a check chamber that the tip of the needle entered the bloodstream; and a clasp including a plate oriented on an axis transverse to the longitudinal axis of the needle and defining a slot having a size for movement of the needle therethrough, the cavity of the plate being rotatable in relation to the longitudinal axis of the needle, between the slidable orientation and a binding orientation whereby a surface of the plate defining the cavity engages the needle to prevent slidable movement thereof, the clasp includes a first extremity extending from the plate and that has a proximal part and a distal part, the distal part defines a cavity having a size for movement of the needle therethrough so that discarding the needle in the cavity of the distal part prevents transverse movement of the first extremity, the distal part of the first limb includes an arm configured to releasably retain a catheter hub with the outer surface of the housing, the clasp further includes a second limb extending from the plate and having a proximal part and a distal portion, the distal portion of the second limb includes a bearing surface that engages the needle, wherein the limbs are resiliently deflected for convergent movement so that the first cavity is placed in the joint orientation and the arm of the first limb releases the catheter hub, the The support surface of the second end engages the needle in the joint orientation to prevent the movement of the needle. A safety needle cover, according to claim 15, characterized in that the clip further includes a transition portion connecting the plate to the first end, the transition portion is configured to engage an inner surface of the housing to facilitate the rotation of the plate cavity. 22. The security needle cover, according to claim 21, characterized in that the transition portion couples the inner surface of the housing to facilitate the clamping coupling of the cavity of the plate with the needle. 23. The safety needle cover, according to claim 1, characterized in that the first cavity includes a groove. 24. The safety needle cover, according to claim 1, characterized in that the cavity of the plate includes a slot configuration. 25. The safety needle cover, according to claim 4, characterized in that the plate has a relative rigidity greater than the extremities. 26. A safety needle cover, characterized in that it comprises: a needle having a distal end and defining a longitudinal axis; and a clasp defining a first cavity having a size for movement of the needle therethrough, oriented on an axis transverse to the longitudinal axis of the needle, the first cavity being movable between a movable orientation and a joining orientation; the clasp includes a first limb defining a second cavity that has a size for movement of the needle therethrough and a distal portion is configured to engage a medical device, the clasp further includes a second end having a bearing surface that engages the needle, the distal portion of the first end engages liberally to the second extremity at the end thereof. movable orientation; wherein the first limb and the second limb are deviated for convergent movement such that the first cavity is placed in union orientation and the distal portion of the first limb is decoupled from the second limb and the medical device. 27. A medical clip adapted for use with a piercing member having a distal end and defining a longitudinal axis, the clip is characterized in that it comprises: a first cavity having a size for the movement of the piercing member through the same and that is oriented on an axis transverse to the longitudinal axis of the piercing member, the first cavity is rotatable, relative to the longitudinal axis of the piercing member, between a movable orientation and a joining orientation; a first limb defining a distal part extending therefrom and a second cavity, the second cavity is positioned distal to the first cavity and has a size for movement of the piercing member through Of the same; and a second limb having a surface configured to engage the piercing member, wherein the first limb and the second limb are, in relation to the first and second limbs, deflected for convergent movement such that the first cavity is placed in the joint orientation as the piercing member moves out of the second cavity. 28. The medical brooch according to claim 27, characterized in that the brooch further includes a plate having a first end and a second end extending therefrom, the plate defining the first cavity. 29. The medical clasp according to claim 27, characterized in that the first cavity defines a joining surface that couples the piercing member in the joining orientation to prevent movement of the piercing member. The medical clasp according to claim 29, characterized in that the joining surface has a flared configuration which facilitates the movement of the piercing member in the movable orientation and which engages the piercing member to prevent movement of the piercing member in the orientation of joined 31. The medical clip according to claim 27, characterized in that the distal part of the first limb includes a transverse portion defining the second cavity. 32. The medical clasp according to claim 27, characterized in that the distal portion includes a first transverse portion and a second transverse portion extending therefrom, the second cavity includes spaced apart aligned openings within the first transverse portion and the second transverse portion. 33. The medical clip according to claim 27, characterized in that the second end defines a cavity that is rotatable, relative to the longitudinal axis of the piercing member, between a movable orientation and a joining orientation, the cavity of the second extremity defines a joining surface that couples the piercing member in the joint orientation to prevent movement of the piercing member. 34. The medical clasp according to claim 33, characterized in that the joint surface of the cavity of the second extremity has a flared configuration that facilitates the movement of the piercing member in the movable and engaging orientation. to the piercing member to prevent movement of the piercing member in the joint orientation. 35. The medical clasp according to claim 33, characterized in that a distal portion of the second limb is releasably coupled to a retainer of the first limb to facilitate movement of the piercing member in the movable orientation. 36. The medical clasp according to claim 33, characterized in that the distal portion of the second limb has a releasably engaging retainer and which is positioned within a defined channel within the first limb, in the movable orientation. 37. The medical clasp according to claim 27, characterized in that the distal part includes a first transverse portion and a second transverse portion extending therefrom, the second transverse portion defines a third cavity which is aligned with the second cavity and which has a size for movement of the piercing member through it. 38. The security cover according to claim 1, characterized in that the second end defines a network of deflection elements configured to deflect the clasp. 39. The medical brooch according to claim 38, characterized in that the elements of network deviations define channels between them and are connected to form a continuous spring element. 40. A safety cover, characterized in that it comprises: a piercing member having a distal end and defining a longitudinal axis; and a clasp defining a first cavity having a size for movement of the piercing member therethrough and which is oriented on an axis transverse to the longitudinal axis of the piercing member, the first cavity being movable between a movable orientation and a union orientation; the clasp includes a first limb defining a second cavity having a size for movement of the piercing member therethrough and a distal portion that is configured to engage a medical device, the clasp further includes a second limb having a network of diversion elements configured to deflect the clasp and a bearing surface which couples the piercing member, the diverting elements of the network define channels therebetween and are connected to form a continuous spring element; wherein the first limb and the second limb are deviated for convergent movement such that the first cavity is positioned in the joint orientation and the distal portion of the first limb disengages the medical device.