TWI375578B - Needle shielding device and method - Google Patents

Description

1375578 IX. Description of the invention: [Technical field to which the invention pertains] Such as sharp needles and the like. SUMMARY OF THE INVENTION The present invention is directed to a medical device that utilizes a needle, a head, an intravenous catheter guide, a blood collection device, and a medical device having means for protecting the needle. [Prior Art]

The present invention is a medical device that utilizes a needle such as a tip, an intravenous catheter guide, a blood collection device, a syringe, and the like. The medical device has a device for protecting the needle. SUMMARY OF THE INVENTION A first preferred embodiment of the present invention is a medical f catheter introducer, syringe, winged needle or curved needle; The sinus device includes a needle and a needle guard that can slide over the needle. The needle guard has a - housing 'housing carrier-stop (preferably, the block can be - spheroid)' and the shoulder is biased by a spring. The housing has a lumen that is commensurate with the lumen such that the housing can slide along the ten heads at a tip end of the needle at the "unprotected position", the spring biased The stopper causes the stopper to face the longitudinal axis of the needle at the second protected position, the tip end of the needle is protected, and the (4) portion is located in the inner cavity of the (4), thereby preventing the tip of the needle from the needle. Prominent. - The restriction member prevents movement of the needle guard relative to the needle. The restriction member may be bridged in the form of a break between the needle and the needle guard', which may be a tubular abutting one of the outer edges of the needle hub, or may be detached from the needle hub. 148249-990811.doc 1375578 The portion of the guard that constitutes the load bearing space of the block is configured to limit the movement of the block toward, around or along the longitudinal axis of the needle. The stopper is an opening (a stopper bearing space) carried on the first casing, and the cover portion extends from the outer wall to the inner casing to partially cover the first casing. The cover has a side opening through which the ball can protrude in the first unprotected position. The spring can be a compression spring, a torsion spring or other type of spring. Preferably, the spring is coaxial with the housing and the needle, and the spring is fixed to the outer face of the housing substantially parallel to the longitudinal axis of the needle. A projection portion is disposed at the second protected position to limit radial movement of the stop relative to the longitudinal axis of the needle. The spring selectively limits the radial movement of the stop relative to the longitudinal axis of the needle. When the end wall of the stopper of the protection device is in the second protected position, the restriction stopper moves toward the longitudinal axis. The opening in the stop carrying space is configured to prevent the block from entering the inner cavity. When the inner cavity is in the second protected position, the support needle is against the stop. In the second protected position, the block portion is located in the inner cavity and the axial direction of the stop is offset from the axial direction of the needle. The present invention also provides a method of protecting the tip of a needle. A stop carried by the housing having the inner cavity is maintained in an unprotected position and is eccentrically moved radially relative to the longitudinal axis of the needle. The needle can slide relative to the stop. When the needle guard moves from the first unprotected position to the second protected position, the tip of the needle passes through the stop and the stop portion enters the lumen, thereby blocking the tip of the needle. In the unprotected position, the stop contacts the outer surface of the needle and the spring applies a bias against the stop against the outer surface of the needle. Movement in the radial, longitudinal and/or circumferential directions of the stop is limited. In the under-protected position, the axial direction of the stop is offset from the axial direction of the needle. 148249-99081].di -6 The advantages and spirit of the present invention will be further understood from the following detailed description of the invention and the accompanying drawings. [Embodiment] The following is a description of an example of a month in which a catheter introducer, a syringe, and other needles are used. It is not intended to limit the scope of the invention. The present invention is applicable to a wide range of needle-based devices such as catheter introducers, syringes, winged needles, and curved needles. In most of the examples t, the needle is fed to provide needle protection and the face* will move away from the f-end of the needle or the cymbal will move close to the tip 4. Some types of solid mechanical or other mechanical devices are capable of preventing the displacement of the end and tip of the protective device when the needle is protected. In the present invention, the movement of the end of the protective device can be avoided by the assembly shown in Figures 1A, b and 〇. The device 1 comprises a needle 10 having a longitudinal axis 11, an outer surface 12 and a tip end 15. The needle guard has a lumen 93' that is coaxial with the needle 10. Figure 1A shows a needle retaining device 9 in a catheter adapter or hub. The needle guard 9 is comprised of a housing % covering the outside of the housing 100. The first housing 95 has a stepped region or diameter The region 1G5 is reduced, and the magazine 2 is spiraled thereon. The first casing has a hole 18 and the first body 95 forms a holding or bearing space 16 (as shown in FIGS. 1A and Q4) and the spherical body 3 is carried. Wherein the hole a extends from the outer wall 丨 9 to the inner cavity 93. The arrangement of the holes 18 allows the spheroid 3 to move therein, but the movement of the spheroid 3 is limited to the radial 'longitudinal and peripheral directions relative to the longitudinal axis 丨丨148249-990811.doc 1375578 The unprotected position spheroid 3 as shown in Figure 1A protrudes from the hole 21 in the cover 。. The spring 2 exerts a force on the spheroid 3, the force of which is relative to The longitudinal axis 11 has axial and radial component forces. In the unprotected position, the spherical body 3 is in contact with the outer surface 12 of the needle 1 . The bias of the spring 2 thereby biases the spherical body 3 against the longitudinal axis 11. When the protective device 90 slides toward the needle 10, it will approach the tip 15. When the bevel of the needle 10 passes the spheroid 3, the spring 2 The biasing causes the spheroid 3 β to be located in the inner cavity 93 and away from the hole 2 丨 and move radially in the hole 丨 8 toward the longitudinal axis. Due to the geometric configuration of the hole 18, the spheroid 3 when the slant passes The portion is located in the inner chamber 93. The shaft 24 of the spherical body 3 is offset from the shaft. The spring 2 and the wall 2 of the cover 100 restrict the radial movement of the spherical body 3. The wall 22 of the hole 18 also limits the spherical shape. The axial movement of the body 3. The tip of the needle 1 is pressed to press the spherical body 3 against the wall 22. If the needle protection device 9 is close to the tip/moon moving needle 10, the ball is obstructed to the spherical body 3, the ball The body 3 is partially located in the inner cavity 15' and is restricted from being moved by the spring 2 and the walls 2 and 22. Referring to Figure 3, the wall 2 of the cover 100 is moved to the partial displacement of the spherical body 3 to the inner cavity 93. In the position, the angle with the tangential line of the spheroid 3 is α. The angle is set to be smaller than the slope angle β of the needle tip 15. In the present embodiment, the angle α is close to the wall 20 and the spheroid 3. If the angle α is too large relative to the central angle β, the spheroid 3 will not be restrained. The above operation is for the catheter introducer, syringe And other needle-based medical devices are described in more detail and minor variations. Three types of catheter introducers are shown here. First, the movement of the needle guard and the tip of the needle is limited to the needle guard. Bridging with the needle guide 148249-990811.doc !375578. Second, the needle guard is located at the tip of a tubular object, and the movement of the tip of the tubular object is limited to the attachment of the object attached to the needle valley. Alternatively, the needle guard is bolted to the needle valley, thereby preventing movement of the needle guard and the tip of the needle. Also in this way, the actuator is implemented. In (4), the movement of the tip and the contact of the pull head to the tip of the needle are prevented by the above device. The following is a description of the invention applied to the first catheter introducer device. In the present invention, the movement of the tip of the needle guard is limited to one of the interruptions on the needle, such as an impact or wrinkle. Please refer to Figures 4 to 8. The purpose of the catheter introducer device is to pierce the body or animal body with a needle, open a hole into the catheter, and then withdraw the needle. In order to stop the transmission of the virus through the needle, the tip of the needle should be protected when it is removed. The needle 10 that pierces the body has an outer surface 12' end 15, a tip end 2A, and an inner lumen 22. The tip 20 has a tip (point) 25 and the tip is a bevel. The two ramps 30 and 40 shown in the legend form a slope extending from the tip end 25 toward the trailing end. More or less than two slopes can be implemented. The tip 15 is protected by a needle hub. The needle 10 has an enlarged cross-sectional area 14 that is adjacent to the tip 20. The enlarged T section can be annular, with the diameter of the expanding needle 10 being an annular segment on the needle or interrupting a 'collision or wrinkle. The enlarged cross-face can be deformed or S placed on the surface of the needle by means of a crimping wheel, the gap formed between the diameter of the needle 10 needle ίο and the enlarged cross section is small (close to 0.004 inch), and Its length is only close to 〇〇3 inches. The catheter device 50 has a catheter hub 52 having a distal end 55, a tip end 148249-990811.doc • 9-1375578 lumen 70. The catheter 65 is extended by the tip 60. The needle 10 is located within the lumen 7 of the catheter 50. 6〇 and go out from the end and the tip. Before the needle is inserted into the body, when the needle 1G and the catheter 65 are wound into the patient, the needle (7) is pulled toward the trailing end. The guide hub 52 has an inner surface 8〇 and an outer surface 82. The inner surface 80 is provided with a peripheral groove 75, the purpose of which will be explained in due course. A single recess, a peripheral ridge or a raised portion is also designed for the same purpose of the perimeter trench. The needle guard 90 is housed in two joined articles _ _ housing % and a second housing (cover 100). The needle guard 9〇 can be suitably placed in the catheter device 5〇. The first housing 95 has a tip end 97 and a tip end 99. The lumen % extends from the end to the tip and is sized to axially slide and rotate the first housing 95 over the needle 1 . The stepped region 1〇5 extends from the near tip end 97 toward the end 99. The area of the reduced diameter allows the spring! The crucible is disposed on the first housing %. The spring 110 is a compression spring that exerts a force on the trailing end and the axial direction of the catastrophic end. Other types of springs can be used, such as springs (see Figure 41) or undulating springs (see Figure 42). The first housing 95 has a hole 120 in the direction of the tip end 97 in the stepped region 1〇5, which is sized to accommodate the spheroid 122. The second housing (lid 丨〇〇) has a distal end 130 and a tip end 135. The end 13 〇 has a hole 14 〇 having a size that is slightly larger than the diameter of the needle 1 , and slightly smaller than the area of the enlarged cross section 14 . Thereby, the second housing can be moved axially from the trailing end 15 of the needle toward the end 2〇 until the hole 14 of the second housing abuts the region of the enlarged cross section 14, i.e., cannot slide toward the end. When the first housing 95 is assembled with the second housing 100, the second housing 1 is mostly covered by the first housing 95 except for the end 97 of the first housing of 148249-990811.doc -10· Ϊ375578. The second housing 1 is thereby covered by the spring li(). The second body 100 has a hole 150 sized to project the spheroid 122 therefrom and into the groove 75. The needle guard 90 is positioned in the catheter hub 52 prior to attachment, with the spheroid 122 partially projecting beyond the aperture 15 and located in the channel. This arrangement secures the needle guard 90 to the catheter hub 52 and causes the guide groove (four)' to be slanted relative to the needle guard (i.e.,

It is circumferential or only allows for a limited amount of material because it does not extend around the inner circumference of the entire catheter hub. The spheroids 122 are also partially located within the lumen 39 of the first housing and are adjacent to the outer surface 12 of the needle 10 ( That is, the spherical body ι22 is in contact with the outer surface 12 of the needle Η), the needle 1 〇 and the needle guard 9 〇 can slide and roll with each other without a small frictional force. The spherical body 22 is limited in the radial direction of the groove 75 and the needle 1〇. The needle guard 90 is thereby fixed to the guide hub 52. The bullet * 110 exerts a force on the distal end of the shaft to the spheroid 122. In addition, the needle 10 radially constrains the spherical body 122 to prevent the spherical body 12 2 from coming off the groove 75.

When the catheter 65 is placed in the patient's body, the needle 1〇 is pulled toward the trailing end (that is, the needle guard 90 is moved toward the tip end 25 of the needle 1G. If the slopes 30 and 40 face the spheroid 122, when the first When the inclined surface 4q aligns the spherical body 122, the spherical body 122 has less restriction in the radial direction of the needle 1G, and the spherical (four) is pressed by the elastic phthalocyanine 11 toward the end and the radial direction, causing it to move into the hole 120. The spheroid 120 is thereby moved away from the hole chest and the groove 75, toward the inner portion of the inner cavity of the needle guard 9 径向, and is rotated about the edge 155 (on the second housing 1). A hole in the wall... and 148249-990811. Doc 1375578 and slides along the sides of the hole 120 toward the end. When the needle loop continues to move the trailing end, it will not be restricted in the radial direction, and the spherical body 122 is completely removed from the groove 75. When the edge 155 is positioned on the spheroid 122, the spheroid 122 will move as far as possible into the lumen 93 in the radial direction, forming a state of partially occluding the lumen 93' and limited by the size of the aperture 120. If the ramps 30 and 40 are partially or not facing the spheroid, the device will operate as described above. In other words, when the tip end 25 of the needle passes the spheroid 122, the needle 10 will no longer limit the spheroid 122. The spring 11 迫使 forces the spheroid 1 22 to move out of the groove 7 5 along the hole 1 20 and The edge 1 5 5 is the axis rotation. The spheroids 12 2 start from entering the inner cavity 93, i.e., are limited by the size and geometry of the holes 120. The spherical body 122 thereby blocks the position of the inner cavity 93 〇 on the hole 120 and blocks the spherical body 122 of the inner cavity 93, as shown in Figs. 5 and 7. When the spheroid 122 moves as shown to the position blocking the lumen 93, the region of the enlarged cross-section 14 is adjacent to the hole 140' behind the cover 100 and is enlarged because the spheroid 122 is no longer located in the groove 75. The cross-section 14 further pulls the needle 1 〇 causing the needle guard 90 to exit the catheter hub 52. Pulling the needle 10 in the distal direction causes the force of the groove 75 against the spheroid 122, and also forces the spheroid 122 to move radially into the lumen 93. The movement of the needle guard in the tail end direction (sliding the needle guard 90 out of the end 20 of the needle) is located in the region of the enlarged cross section 14 of the needle 10 and the hole 140 behind the second housing 1 The interaction between the two is prevented. The movement of the needle guard in the distal direction (to contact the tip end 25 of the needle tip) is prevented by the distal end 20 of the needle 10 adjacent the spheroid 122. 148249. 9908Il. Doc 12 1375578 The setting of the distance between the enlarged transverse surface 14 and the tip 25 is such that when the large end 25 is aligned with the spherical body 122, there is sufficient space for the spherical body to move down to the first housing. 100 holes 120. The surface 136 as described above is tangentially spheroid 1 2. The angle formed by 2 is shown in Fig. 3. The distal end 97 of the first housing 95 and the cover 100 assume a protruding profile such that the tip 25 cannot protrude from the end 97 of the needle guard 90. For holes 120 and 15, it is possible to use a plurality of spheroids to place a plurality of holes. If the method of the above-mentioned end portion 97 and the projection of the lid 1 is made as described above, it can be reduced, resulting in a tighter needle guard 90. After installation, but before the needle 10 is moved toward the end, the spheroid 122 is partially located in the inner cavity 93' and is pressed by the spring ι 10 to abut against the end wall 157 of the hole 12. The upper portion of the spheroid 122 is located below the tip end 135 of the first housing 1 . In either embodiment, the spring turns, unfolding, and isolating the upper portion of the aperture 120. "The spherical body 122 is thereby constrained by the aperture 120 in the radial and axial directions. If the needle is moved toward the end, the needle will abut the spheroid 122 that abuts the end wall 157 of the second housing 100 and the surface 136. It is further explained that the movement of the needle 10 at the end and thus the tip 25 of the needle from the needle guard 9 将会 will be avoided. The inner cavity 93 is sized such that the needle 1 〇 is relatively tightly attached thereto. Thus, when the needle ίο moves toward the end and the spheroid 122 abuts the tip end 25 of the needle, the needle 1 will not leave the spheroid 122. The lumen% thus provides support to the spheroid 122 to prevent the needle 1 from swinging and prevents the tip 25 from piercing the first corpus 95. The proper cooperation between the inner chamber 93 and the needle 1 致 causes the needle guard 90 to easily pass through the needle 1 (in other words, the needle guard 9 〇 148249-990811. The end of doc 13 1375578 passes through the end of the needle). Properly fitting the pointer head protection device is guided such that the end 15 of the needle 10 is at the end 130 of the cover 100, and it is important to enter the hole 140 〇 above, since the hole i 40 is only larger than the diameter of the needle 10. 001 English pairs. In one embodiment, the spheroid 122 completely enters the lumen 93. The diameter of the spheroid 122 is slightly larger than the diameter of the lumen 93, and the spheroid 122 is thus axially constrained by the lumen 93 and the needle 1 。. Conversely, the inner cavity 93 is also sized to support the needle 1 against the spheroid 122, thereby preventing the needle from oscillating and preventing the tip 25 from piercing the first housing 95. In order to move away from the groove 7 5 'the spheroid 12 2 , the distance is at least equal to the sum of the distance from the hole 150 and the wall thickness of the cover 1 (approximately 〇 3 英 to 0. 005 miles). The needle protection device is configured such that the spherical body ι22 extends into the inner cavity 93 approximately equal to the above distance. The remainder of the inner chamber 93 is blocked. If a small size needle is used, a larger spheroid is required to block the lumen 93 to prevent the tip end 25 of the needle from piercing the unoccluded portion of the lumen 93. If a large needle is used, only a small spheroid is required (in other words, if the needle has a larger diameter, the spheroid can be smaller). The above description includes the operation of the needle guard 9 to the catheter hub 5, in addition to the function of the needle guard, providing a mechanism for securing the needle guard 90 to the catheter hub 50 and disengaging. This provides the added benefit of ensuring that the needle guard 90 does not leave the catheter hub 50 until the tip 25 of the needle is protected. If the catheter lock cover 100 is not required at this point, it can be closed (in other words, there is no hole 12 〇) and slightly enlarged to accommodate the diameter of the entire spheroid 122. 148249-990811. Doc 1375578 The following description relates to the implementation of a second catheter introducer device of the present invention. For the second catheter introducer, when the needle is protected, a catheter covers the entire needle and prevents the needle guard from moving further at the end. Please refer to Figures 9 to 14. The body is pierced by a needle 210 having an outer surface 212, an end 215, a tip 220, and a lumen 222. End 220 has a sharp point 225. The beveled end has two bevels - the beveled surface 230 and 240 extending from the sharp point 225 toward the trailing end to form a slope. More or less than two bevels are acceptable. The end 21 5 protects the needle hub 245. The needle hub 245 has a catheter 250 extending back from the protected end of the needle 210. Catheter 250 has a tip 254 and a tip 252 where the needle is protected. The catheter 250 has a lumen 260 that is coaxial with the lumen 222 of the needle 21, such that fluid can flow into the lumen 26〇 along the lumen 222. The catheter 25 tether is integrated and coaxial with the other hand catheter 255, and the handle-like catheter 255 is shaped like a handle and has a distal end 258 and a tip end 256. The conduits 250 and 255 are coupled to the portion 275 (tail end) of the device. That is, the end 254 of the catheter 250 and the end 258 of the catheter 255 are joined at the back 2*75. The conduit 250 is open to the back (e.g., opening 270) and the opening is suitably combined with the venting opening to allow gas to escape rather than liquid as it flows into the inner chamber 222 and the inner chamber 260. The directors 2 50 and 2 5 5 are transparent (or at least partially transparent), allowing the user to see the flowing liquid. The catheter 255 has a peripheral flange 272 at the tip 250' that coincides with the area of the needle end 245 that protects the needle hub 245. The conduit 255 also has an inner edge flange 274 that generally conforms to the flange 272. The combination of the guide 250 and the catheter 255 can be considered as two concentric cylinders. Guide 148249-990811. Doc 15 1375578 Between the tubes 250 and 255 is an annular space extending from the tip 256 to the back 275. The catheter device 280 has a catheter adapter or hub 282 comprising a tip 285, a tip 288 and extending between the trailing end and the tip. Inner cavity 290. The conduit 286 extends outwardly from the end 288. The needle 2 10 is located in the lumen 290 of the catheter device 280 prior to insertion into the body. When the catheter 286 is inserted into the patient's body with the needle 210, the needle 210 is pulled toward the end. The hub 282 has an inner surface 292 and an outer surface 291. The inner surface 292 has a peripheral groove 293 for purposes explained above or as appropriate. A single depression, a peripheral ridge or a raised portion is also designed for the same purpose of the peripheral groove. The needle guard 2110 has a distal end 2120, a tip end 2115, and an inner lumen 2112 from the trailing end to the distal end. The inner lumen 2112 is sized at the tip end 2115 to allow the needle guard 2110 to axially slide and rotate on the needle 210. The needle guard 2110 includes two parts - a first housing 295 and a cover 2100. The cover 21 is tethered to the tip 2115 and suitably combined with the number of catheters 282. The needle guard 2110 is concentric with the catheters 250 and 255. When the first housing 295 of the needle protection 211 is in the unassembled position, the portion is located in the %-shaped space 276. The first housing 295 is partially transparent, allowing the user to see the fluid. The end 2120 of the needle guard 2110 is fitted with a peripheral flange 2117. When the needle guard 2110 moves along the axial direction of the annular space 276 toward the trailing end. At the end, the flange 2117 will eventually abut the flange 274 of the inner edge of the catheter 255 to prevent further movement of the needle guard 2110 toward the end. In the assembled position, the end 2121 is contiguous with the flange 274 at the end 256 of the conduit 255. 148249-990811. Doc 1375578 The first housing 295 has an end 297-tapered diameter region with a stepped region 2105 that allows the spring 2111 to fit over the first housing 295 and the cover 2100 to fit over the spring 2111. The stepped region 21〇5 may be additionally formed 'outside the first housing 295' and attached to the first housing 295. The spring 2111 is a compression spring that exerts axial force toward the trailing end and the end. The first body 295 is mounted on the stepped region 2105 toward the end 297 with a hole 2120' sized to accommodate the spheroid 2 22 . The tweezers 2100 is metal coated with a trailing end 213〇 and a tip 2135. When the first housing 295 is assembled with the cover 2100, the second housing 21 is tethered to cover the trailing end 297 of the first housing and the magazine 2111. The cover 2100 is fitted with a hole 2150 sized to partially project the spheroid 2122 and enter the groove 293. The cover 2100 is attached to the catheter hub 282 and is suitably sized in size. The portion of the first housing 295 that is directly adjacent to the stepped region 2104 is also suitably incorporated into the catheter hub 282. When the needle guard 2110 is attached to the catheter hub 282 (in other words, the cover 2100 and a portion of the first housing 295 are located within the catheter hub), the spheroid 2122 protrudes from the aperture 2150 and is located in the groove 293 prior to assembly. . Thereby, the needle guard 211 is fixed to the catheter hub 282, and the rotation of the catheter hub M2 relative to the needle guard 211 is dependent on the length of the groove (or not only 疋 or only allowed) Limited movement because the groove 293 does not extend around the entire inner edge of the catheter). The spheroid 2122 is partially located in the inner cavity 2112 of the needle guard 211G and is adjacent to the outer surface 212 of the needle 21 ( (in other words, the spheroid is called to contact the outer surface of the needle. The needle 210 needle protection device 211 can Very small friction phase 148249-990811. Doc 1375578 Sliding and rotating with each other. The spherical body 2122 is radially restrained by the groove 293 and the needle 210" needle guard 211, thereby being secured within the catheter hub 282. The spring 2111 exerts a force on the spherical body 2122 toward the distal end. In addition, the needle 1 于 is radially adjacent to the spheroid 2122 and restrains and prevents the spheroid 2122 from exiting the groove 293, as illustrated in FIG. When the catheter 286 is placed in the patient, the needle 210 is pulled toward the trailing end (in other words, when the needle guard 2110 is moved toward the tip 225 of the needle 210) or the needle hub 245 is pulled toward the trailing end). If the ramps 230 and 240 face the spheroid 2122, when the ramp 240 is aligned with the spheroid 2122, the spheroid 2122 is less radially constrained by the needle and is radially displaced by the compression of the spring 2Π1. Enter the hole 2120. The spheroid 2122 thereby exits the aperture 2150 in the cover 2100 and the groove 293' on the catheter valley 282 and enters the lumen 2112 of the needle guard 211'' in the radial direction, rotating with the edge 2115, (in the cover 21 一 a wall of the upper hole 2150) and slides along the side of the hole 2 120 toward the end. When the ramp 23 0 is aligned with the spheroid 2122, the needle 210 no longer limits the spheroid 2122 in the radial direction, and the spheroid 2122 completely leaves the groove 293. When the spheroid 2122 is positioned below the rim 2155, the spheroid 2122 will move radially into the lumen 1212 as much as possible, forming a state of partially occluding the lumen 2 112 and being limited by the size of the aperture 2 120. If the ramps 230 and 240 are not facing the spheroid 2122 or partially facing the spheroid 2122', the apparatus will operate as described above. The spring 2111 forces the spheroid 2122 along the aperture 2120 to cause the spheroid 2122 to exit the groove 293 and rotate about the edge 2155. The spheroid 2122 starts from entering the lumen 293, 148249-990811. Doc •18- 1375578 is limited by the size and geometry of the hole 2120. The spheroid 2122 thereby partially blocks the lumen 2112. After the spheroid 2122 is moved to a position that partially blocks the lumen 2112, the flange 2117 of the needle guard 2110 abuts the flange 274 of the inner edge of the catheter 255 and further pulls the needle 210 because of the spheroid The 2122 is no longer located within the groove 293, causing the needle guard 2 11 to exit the catheter hub 282. The displacement of the needle guard 2110 in the distal direction (the needle guard 211 is finally slid away from the end 220 of the needle) is prevented by the interaction of the flanges 274 and 211 7 . The displacement of the needle guard 2110 in the trailing end direction (the tip end 225 of the contact needle) is prevented by the abutment of the end 220 of the needle 21〇 with the spherical body 2122, the abutment being the wall 2157 of the first housing 295 and A second housing or wall 295 on the inside of the cover 2100. The distance between the flange 2 11 7 and the tip 225 is such that when the tip 225 is aligned with the spheroid 2122, the spheroid 2111 has sufficient space to move into the hole 2 1 20 of the cover 21 。. The arrangement of the angles α and β (in other words, the tangent formed by the spherical body 2122 and the surface 2 13 6 and the smallest bevel angle) is as described above, as shown in FIG. After assembly, but before the needle 21 is moved toward the end, the spheroid 2122 is partially located in the inner chamber 2112, and is partially pressed against the wall 2157 at the end of the hole 2120 by the spring 2111. The upper portion of the spheroid 2122 is located below the surface 2136 of the upper portion of the end 2135 of the cover 2100. The end 299 of the first housing 295 has the same shape as the cover 2100, so that the tip 255 does not protrude from the tip end 2115. A plurality of spheroids can likewise be used. The previous design also features a conduit lock. 148249-9908Il. Doc •19- 1375578 When the needle guard 2110 is in place, but before the needle 21 is moved toward the end, the spheroid 2122 is partially located in the inner cavity 2112, and is partially pressed against the hole 2120 by the elastic 21u. Wall 2157. The upper portion of the spherical body 2122 is below the surface 2136 of the upper portion of the end 2135 of the cover 2100. The hole 212〇 can be isolated by the bomb 2111. The spheroids 2 12 2 are limited by the holes 2 120 in the radial direction as well as in the axial direction. If the needle 210 is moved toward the end, it will abut the spheroid 2122. The spheroid 2122 will be forced against the wall 2157 at the end of the first housing 295 and the wall 2136 of the cover 2100. The needle 210 thus cannot protrude from the end of the needle guard 2110. As in the embodiment described above, the lumen 2112 provides anti-wing support to the needle 210. The same considerations as described above apply to the movement and size of the spheroid relative to the size of the needle. In other words, a larger spheroid can be used for smaller needles and vice versa. The conduit portion of the first housing 295 and the needle guard 211 can be extruded using a polymeric conduit 95 (not shown) as shown in Figure 14. The polymeric conduit 950 is relatively thin and soft. It is also extruded due to the polymeric conduit 95, making it extremely lightweight and easy to manufacture, and requires less material relative to the body made by the mold. In order to provide rigidity and strength, the polymeric conduit can be reinforced with a wire 956 of concentrically extruded metal. The wire 956 is an axial wire that is wound along the length of the side of the conduit 955. The axial wires can be arranged in a fabric, mesh, lattice or spiral shape. The following description relates to the implementation of the catheter introducer device of the present invention, the movement of the needle retaining device at the end being limited by the tether that is fastened to the needle hub. 15 to 19 are illustrated. The needle valley 45 has a catheter 5 〇 from the 148249-990811. Doc -20- 1375578 extends back at the end 15 of the needle 10. The guide (4) has a trailing end 54 and a tip end 52 (the p-duct 5〇 at the needle 10 of the needle has a lumen 60 coaxial with the lumen 22 of the needle 1〇, causing fluid to flow into the lumen (8) along the lumen 22. The conduit 50 Forming a handle that allows the user to grasp the catheter device 5 for piercing the needle 10 into the patient. The guide 50 is open on its back (with a hole 7 〇), which is properly combined with the vent plug The non-liquid gas may be allowed to escape as the liquid enters the inner chamber 22 and flows into the inner chamber 60. The conduit 5 is transparent (or at least transparent), whereby the flow of the liquid is visible to the user. The flange has a flange 72 disposed at the periphery of the tip 52, substantially coincident with the area of the tip end 15 of the needle 1 that is fastened to the needle hub 45. The flange 72 is configured with a small hole 74. The threaded tether 73 passes through The hole 74. The tether 73 has a tail end 77 and a distal end 76. The tail end is in the shape of a τ. The cantilever 79 of the τ shape prevents the tether 73 from leaving through the hole 74 when moving toward the end. Finally, the 76 series is tied to the needle.蒦 蒦 device 11 〇 (disclosed below). Check the rope η to prevent the needle protection device at the end In the direction away from the tip end 2 of the needle 1 。. The tether 7 3 can be composed of nylon and is very similar to the label holder for the label of the clothing item of the retail industry. The tether 73 can be integrally formed with the first housing 95, However, this method is not necessarily used. The guide device 80 has a catheter hub 82 that includes a tail end 85, a distal end 88, and a lumen 90 extending between the trailing end and the distal end. The catheter 86 extends from the distal end 88. The needle 10 Before being inserted into the body, it is located in the lumen 9 of the catheter device 80. When the needle 10 is inserted into the patient, the needle 10 is pulled toward the trailing end together with the catheter 86. The catheter hub 82 has an internal surface 92 and External surface 91. -21 · H8249-9908ll. D〇c 1375578 The surface 92 is provided with a peripheral groove 93, the purpose of which will be explained in due course. A single recess, a peripheral ridge or a raised portion is also designed for the same purpose of the perimeter trench. Further, the needle guard 110 has a tail end 118, an end 115, and a lumen 112 extending from the tail end to the end. The inner cavity 112 is sized such that the needle guard no is axially slid and rotated on the needle ίο. The needle guard ιι is included in the two joined articles, the first housing 95 and the cover 1 〇〇. The lid 1 is attached to the end 115 and suitably combined in the catheter device 8A. The first housing 95 has an end 97_ tapered diameter region having a stepped region 1〇5 that allows the spring 111 to be fitted to the first housing 95 and the cover 100 to be fitted to the spring 2111. The spring 1U is a compression spring that exerts an axial force in the trailing end and the end direction. The first housing 95 is fitted with a hole 120 in the stepped region 1〇5 toward the end 97, which is sized to accommodate the spherical body 122. The cover 100 is metal clad with a trailing end 130 and a tip end 135. The cover 100 covers the end 97 of the first housing and the spring 111. The cover 1 has a hole 150' sized to allow the spheroid 122 to protrude therefrom and into the groove 93. The size of the cover 1 is appropriately combined in the catheter hub 82. The first portion of the housing 95 directly adjacent to the stepped region 104 is also suitably incorporated in the catheter hub 82. When the needle guard 110 is attached to the catheter hub 82 (in other words, the cover 100 and the portion of the first housing 95 are located in the catheter hub 82), the spheroid 122 protrudes from the aperture 150 and is located in the groove prior to assembly. Slot 93. Thereby the needle guard 110 can be secured to the catheter hub 82, the catheter hub 82 being rotated relative to the needles 148249-99081, doc • 22-1375578 depending on the length of the groove 93 (in other words, regardless of the circumference) Or only limited movement is allowed because the groove 293 does not extend around the entire inner edge of the catheter hub). The spheroid 122 is partially located within the lumen 112 of the needle guard U0 and abuts the outer surface 12 of the needle 10 (in other words, the spheroid 122 contacts the outer surface 12 of the needle 10). The needle 1 〇 and the head guard 2 11 0 can slide and rotate with each other without a small frictional force. The spheroid 1 is radially constrained by the groove 93 and the needle 10. The spring 2111 applies a force to the spheroid 2122 toward the distal end. Further, the needle 1〇 is contiguous with the spherical body 122 and restricts and prevents the spherical body 122 from being separated from the groove 93. When the catheter 86 is placed in the patient, the needle 1 is pulled toward the trailing end (in other words, when the needle guard 110 is moved toward the tip end 25 of the needle 1 ,, or the needle hub 45 is pulled toward the trailing end). If the first inclined surface 4〇 and the second inclined surface 3〇 face the spherical body 122, when the first inclined surface 4〇 is aligned with the spherical body 122, the spherical body 122 is less restricted by the radial direction of the needle and is subjected to the spring 丨The compression of the crucible begins to move radially into the hole 12〇 toward the end. The spherical body 122 thereby leaves the hole 150 in the cover 100 and the groove 93 on the catheter hub 82, and enters the inner cavity 112 of the needle guard 11〇 in the radial direction, and rotates with the edge ιΐ5 as an axis. 100 is a wall of the upper hole 15) and slides along the side of the hole 12〇 toward the end. When the second bevel 30 is aligned with the spheroid 122, the needle 1〇 no longer restricts the spheroid 122 in the radial direction, and the spheroid 122 completely separates the groove 93. When the spheroid 122 is below the edge 155, the spheroid 122 will move into the lumen 112 as far as possible in the radial direction. As shown in Figure 6. If the first bevel 30 and the first bevel 4 are not facing the spheroid 112, the above operation is similar to another embodiment of the present invention. 148249-9908 丨丨doc -23- When the needle hub 45 is moved toward the trailing end, the tether 73 stops passing through the hole 74 and is moved toward the end by the boil. When the spheroid 122 moves to partially block in the inner cavity 112, the cantilever 79 of the reel 73 abuts the flange 72, and the money is pulled in one step; because the spheroid 122 is no longer located in the groove. , causing the needle guard m to leave the catheter valley 82. Pulling the needle in the direction of the tail causes the force of the groove 93 against the spheroid 112, and also forces the spheroid 122 to enter the lumen 112 radially. The displacement of the needle retaining device in the distal direction (the needle guard 丨丨〇 finally slips away from the end of the needle) is prevented by the interaction of the cantilever 79 and the flange. The displacement of the needle guard in the distal direction (contact tip 25 of the needle) is prevented by the abutment of the distal end 20 of the needle 10 with the spheroid 122, which in turn abuts the wall 157 of the aperture 120. The distance between the cantilever 79 of the tether and the tip 25 is such that when the tip 25 is aligned with the spherical body 122, the spheroid 112 has sufficient space to move into the hole 120 of the cover 1〇〇. The arrangement of the angle α (the tangential angle between the spheroid 122 and the surface 136 and the end 135 of the lid 1 )) and β (the minimum needle bevel angle) is such that the lumen 112 provides support to resist the spheroid 122, It is used to prevent the needle 1 from swinging and prevent the tip 25 from piercing the first housing 95. The relationship between the spheroid and the needle size is as described above. As shown in Fig. 20, the needle 45 in the embodiment shown in Figs. 15 to 19 can be constructed of a sturdy plastic member 940 having a barb 945 on the trailing end 947. The combination of the barbs 945 and the extruded polymeric conduit 95 is shown in FIG. The polymeric conduit 95 0 is concentrically extruded with the lower conduit 960 and the conduit 960 follows the path of the tie 73. The polymeric conduits 950 and 960 are comparable to 148249-990811, doc-24- thin and elastic. By extrusion, the device is very light and easy to manufacture. The amount of material required for manufacture is reduced relative to the casting. In order to provide stiffness and strength, the polymeric conduit can be reinforced with concentric extruded metal wires, woven, meshed, or spiral-like arrangements. As depicted in Figure 14, the following is a description of the application of a needle guard for a hypodermic syringe (a needle-based device without a catheter in front). As shown in Figure 23 to %. The firing and needle device is attached to the body of the syringe 5〇2 and to the female needle. The combiner 508 is combined with a male adapter 5〇6. The needle adapter has a hub η, and the trailing end 505 of the needle 510 is assembled in the hub 512. The needle 51 has a tip end 525. The needle holder 900 is composed of a two-piece assembly of a first housing 9〇5 and a second housing or cover 91〇. The first housing 905 has a trailing end 909 and a distal end 907. The inner lumen 913 extends between the trailing end and the distal end and is sized to axially slide the first housing 905 over the needle 1 . The extension from the trailing end 9〇9 to the end 907 is a stepped region. This tapered diameter @ area allows the elastic cylinder to be disposed on the first casing 9〇5. The spring 911 is a compression magazine that applies an axial force 4 toward the trailing end and the end S. The first housing 9〇5 is disposed in the stepped region toward the final 907 with a hole 920 sized to accommodate the spherical body 922°. The second housing or cover 91 has a trailing end 930 and an end 935 ^tail end 93〇 The configuration hole 93 7 ' is sized slightly larger than the diameter of the needle 5 。. By this, the second housing 910 can slide from the trailing end 5〇5 toward the tip end 525 along the axial direction of the needle. After the first housing 905 and the second housing 91 are assembled, the second housing 148249-99081J. The doc -25- 1375578 910 system covers the first housing 905 except for most of the trailing end. The second housing 910 is provided with a hole 940 sized to partially project the spherical body 922. This practice makes the needle guard 900 very compact. However, the second housing 9 10 can be made slightly larger or be configured with air bubbles to accommodate the spheroids 922 such that the spheroids 922 can be completely covered. When the needle guard is located at the needle hub 512, the spheroid 922 partially projects the aperture 940 prior to assembly. The spherical body 922 is partially in the inner cavity 913 of the first housing 905 and abuts the outer surface 522 of the needle 5 10 (in other words, the spherical body 922 contacts the wall 522 outside the needle 510). The needle guard 900 can be slid in the distal direction along the needle 5 10 at this position with minimal friction. The radial movement of the spheroid 922 is limited by the diameter of the aperture 940, which is sized such that the spheroid 922 cannot escape the needle guard 900 through the aperture 940. Movement of the spheroids 922 in other directions in the radial direction is also limited by the needle 510. The spring 911 applies a force 5 to the distal end of the spherical body 922. A reins or belt 800 is attached to the trailing end 909 of the first housing 905. It is suitably cast as the first housing 905, but is not necessary. The reins 800 have an end 802 (attached to the trailing end 909 of the first housing 905) and a trailing end 804 that extends back and forth from the needle guard 900. The handle 806 is attached to the rear end 804 for the user to grasp. The handle 806 is cast together with the reins 800, but may be a separate piece attached to the reins 800. The reins or belt 800 are made of a resilient, semi-rigid material such as nylon. Any material that can flex and provide axial compressive strength is suitable as long as it allows force to be transmitted from the needle guard 900 to the reins 800. 148249-990811. Doc • 26· 1375578 The needle valley 512 and the restricting member 514 are made of monolithic tungsten. The restricting member ... has a rail 516 which is slidable toward the distal end when the needle guard 9 (10) slides toward the end along the needle 51. Restriction member 514 has brake member 518'. When handlebar 806 reaches brake member 518, brake member 518 prevents further movement of reins 800. The restricting member 514 has an open channel 520 that allows the reins 8 to be placed on the track 516 during manufacture, but prevents the pick-up 800 from being easily detached. When the needle 510 is protected, the user can simply grasp the handle and push it so that the needle guard 900 can be moved toward the end along the needle 51. When the needle guard 900 reaches the point where the tip 525 of the needle passes the spheroid 922, the spheroid 922 is radially restricted by the needle 5 1 弹簧. The spring 911 forces the spheroid 922 to move toward the end and radially into the hole. 92〇. The spherical body 922 is thereby removed from the hole 940 and enters the inner cavity 913 of the needle retaining device 900 in the radial direction, rotating with the edge 955 as an axis, and the edge 955 is a hole 940 on the second housing 910. wall. When the tip 525 of the needle passes over the spheroid 922, the needle 510 no longer constrains the spheroid 922. The spring 9 ι forces the spheroid 922 along the aperture 920 causing the spheroid 922 to rotate about the edge 955. The spheroid 922 is limited by the size and geometry of the hole 920 as it enters the inner cavity 913 of the first housing 9〇5. The spherical body 922 thus partially blocks the inner cavity 913. When the spherical body 922 moves to a position partially blocking the inner cavity 913, the handle 806 also reaches the braking member 518, preventing further opponents from pulling the 8〇6 and the reel 800's pull needle protection device 9 at the end direction. (The displacement of the needle guard 900 last from the end 525 of the needle) is the brake 148249-990811. Doc •27· 1375578 5 18 and the junction of the handle 806 is prevented. The displacement of the needle guard in the distal direction (contact tip 25 of the needle) is prevented by the abutment of the end 525 of the needle 51 and the spheroid 922. The length of the reins 800 (to the tip 525) relative to the length of the first housing 9〇5 is such that when the tip 525 is aligned with the spheroid 922, there is sufficient space for the spheroid 922 to move to Part of it is located in the inner cavity 9〗 3. Similar considerations have been made as described above for a catheter injection application where the angle of choice is formed between the ball and the immediate spheroid and when the needle guard is deployed, between the portions of the spheroidal adjacent needle guard. The trailing end 909 of the first housing 9〇5 is formed in a protruding shape so that the tip end 525 cannot protrude from the end 9〇7. When the needle guard 900 is assembled, the spheroid 922 is partially located within the lumen 913 and partially below the end 935 of the second housing 91〇 and limits the movement of the spheroid 922. If the needle guard 9 is moved toward the trailing end, the spherical body 922 will abut the tip end 525 of the needle and press against the end of the second casing 91 and the upper wall. Further movement of the end of the needle guard and protrusion of the tip 25 can be prevented. The inner cavity 913 is sized such that the needle 51 is tightly integrated into the inner cavity 913 whereby the needle 51 is moved when the needle guard 9 is moved toward the trailing end to the assembled position and the spherical body 922 is adjacent the tip 525. 〇 does not move away from the spheroid 922. The inner cavity 913 thereby provides support for the spherical body 922 to prevent the needle 510 from swinging and prevents the tip 525 from penetrating from the first housing 905. In any of the embodiments, the spheroid 922 completely enters the lumen 913. The diameter of the spherical body 922 is slightly larger than the diameter of the inner cavity 913. Therefore, the inner cavity 913 is also appropriately sized to support the needle 91 〇 against the spheroid 922, thereby 148249-9908Il. Doc • 28 · 1375578 Prevents the needle from swinging and prevents the tip 525 from piercing the first housing 905. This month's application of the winged needle is shown in the figure and figure. In this embodiment only the needle retaining device 6110 (refer to Figures 9-13 of this type) is attached to the sheath 6〇〇. The sheath _ has a slit 6〇3 which allows the needle guard 6110 to slide over the wing 6G2 and the catheter_. The movement of the needle guard 6110 at the end is prevented by the abutment of the back 6 (8) of the slit 6〇3 and the wing μ]. The application of the other winged needle is shown in Figs. 29 and 30. In this embodiment, the needle guard 711 (which may be described with reference to Figures 9 through 13) is configured with wings 702. The needle 45 can be released from the catheter 7〇4 by squeezing the finger end. The flange on the manifold 700 abuts the collar at 7〇6 to prevent movement of the needle hub 45 at the trailing end, where the needle is protected in the assembled position and also prevents movement of the tip 25 at the end. Another winged needle is illustrated in Figures 31 and 32. In this embodiment, the needle hub 845 is attached to the wings 8〇2 and 8〇4. The wings 8〇2 and 804 are arranged for the conduit 806. The wings 802 and 8〇4 each have a projection 812, 814 and 808, 810 which, like a hinge, can rotate the wings 8〇2 and 8〇4 against the conduit 806. The projection 808 is attached or abutted to the trailing end 8120 of the needle guard 8110 and is provided with a short lumen which allows the projection 8〇8 and the wing 804 to slide along the axial direction of the needle 1〇. The movement of the wings 8〇4 is limited between the projections 812 and 814 of the wings 802. When the spheroid is moved to the protected position as described above, the movement of the needle guard 8110 at the trailing end can be prevented, and the abutment of the projection 81 of the wing 8〇4 with the projection 812 of the wing 802 can be prevented. Wing 8〇4 and needle protection I48249-990811. Doc -29- 1375578 Set the movement of the 8110 at the end. The present invention is illustrated in Figures 3 3 and 34 in a curved needle. In this embodiment, the needle hub 1045 is generally L-shaped and the rifle 1 〇 75 is generally parallel to the needle 1010 except for slight curvature by gravity. The wing 1〇〇4 has a hole 1002, and the needle guard 1〇11〇 (refer to FIG. 16 to FIG. 19 for this type description) is fixed by the spheroid 1 〇12 2 in the assembly and is located in the hole 1 〇〇 2 Cattle. When the tip 1025 of the i-needle is protected, the spheroid 1〇1 22 allows the branch guard to be removed from the hole 1002. At this position, the "reel 1 〇 75 is completely finished" and the movement of the needle holding device 10110 at the end is also prevented. The blood collection device comprises a needle guard as shown in Figures 23 through 26 and is shown in Figure 35. Some of the embodiments are illustrated in Figures 36-48. The figure % shows that the spring 111 is located on one side of the needle 10 and is parallel to the axial direction of the needle. In Fig. 37, the spring in is a torsion spring that provides torque around the needle 1〇. Thereby an annular force is applied to the spheroid 122. The holes 12 are configured to allow the spherical body 122 to move from the periphery to the inner cavity 93. Figure 38 illustrates the spring 1 丨丨 disposed outside of the first housing 95. Figure 39 illustrates the insertion of the piston 1〇1 between the spring ln and the spherical body 122. In Fig. 40, the piston 1〇1 is inserted between the spring 111 and the spherical body 12 2 in the form of a cover. In this embodiment, the spring 111 is not isolated by the pen 100. Figure 41 illustrates the spring 111 in the form of a spring leaf that is integrated with the cover 1〇〇. The spring 111 may be a separate portion of the cover 1 or may be formed in conjunction with the cover 100. Figure 42 illustrates the magazine 1U being screwed onto the needle 10 in the form of a undulating crotch. When the spheroid 122 is a spherical body, the perfect spherical body is unnecessary 148249-990811. Doc •30· 1375578. In the embodiment of Fig. 43, the rolling elements 10 2 can replace the spheroids 122. In Fig. 44, the groove 75 is covered by a metal wire for vigorously pulling and reducing the loin located in the conduit 52, thereby making the catheter hub 52 easy to cast. In this embodiment, the metal wire 750 is an extension of the metal iron 751, and the breakable conduit 86 is located within the catheter hub. Metal wire 750 can be a separate ring or a partial ring. The spheroid 122 can be isolated from the cover 100 as illustrated in Figures 45-47. In this example, the spheroid 122 is not fixed to the catheter hub. In the embodiment of Fig. 47, the cover 100 is shielded by an elastic metal or plastic skin 105 that covers the hole 150 and allows the movement of the spherical body 122, whereby the fixation of the catheter valley 52 can be released. This structure can be replaced by a protruding portion forming a solid metal or peripheral projection, necking or channel. In the embodiment of Fig. 48, the spherical body 122 is fixed to the piston 800, and the piston 8 is abutted with the needle 10 in the unassembled position. The piston 8 is moved with the spherical body 122 when the needle guard is disposed. The size of the piston 8〇〇 is determined by the size of the needle. This embodiment thereby allows a certain size of the spheroid to be used for different needle sizes. In the embodiment of Figures 49 to 51, the needle guard as described above is applied to the Y-shaped guide introducer device 'the needle 10 is pulled therein through the gap 6000. From the above preferred embodiment It is to be understood that the features and spirit of the present invention will be more apparent, and that the present invention may be limited by the preferred embodiments disclosed above. On the contrary, the purpose is to 158249-990811 which is intended to cover various changes and 2 and eight-phase specificity as claimed in the present invention. Doc = the van, inside. Therefore, the scope of the invention of the invention is to be interpreted broadly so that the invention may be B and C show cross-sectional views applied to the catheter introducer; ° cross-sectional view 2 in a deployed position shows the needle protection device XS1 · garden, Figure 3 shows the needle angle and needle protection device Figure 5 is a vertical cross-sectional view showing the catheter guide number assembled in an unexpanded position by the needle protection skirt; ^, Figure 5 shows the assembly of the catheter guide through the needle flat edge device A vertical cross-sectional view of the unfolded position; 'Figure ό 绘 不 仅 仅 仅 ▲ ζ ζ ζ ζ 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对The needle τ ensures that 5 devices are mounted on the catheter guide in a cubic cross-sectional view of the deployed position; ' Figure 8 shows the needle #带社, ', 4 device and the parts of the needle hub. Jian "line in FIG. 9 shows the needle protector through the catheter introducer assembly in a cross-sectional view of a vertical position of the non-deployed; FIG lines. A vertical cross-sectional view of the catheter guide in a deployed position without a distal needle protection device; 148249-990811. Doc -32- 1375578 Figure 11 is a cross-sectional view showing the assembly of the guide guide in an unexpanded position by the needle guard; Figure 12 is a view showing the assembly of the catheter guide through the needle guard FIG. 13 is a perspective view of the needle protection device and the components of the needle (four). FIG. 14 is a perspective cross-sectional view of the extrusion-type polymerization guide for the embodiment of the invention; FIG. Figure 16 is a vertical cross-sectional view showing the catheter guide in an unfolded position by the needle guard; Figure 16 is a vertical cross-sectional view of the catheter guide assembled in a deployed position by the needle guard; A cubic cross-sectional view of the needle-protecting device assembled in the unexpanded position; FIG. 18 is a cubic cross-sectional view of the catheter guiding device assembled in the unfolded position by the needle protecting device; And a development view of the components of the needle hub; FIG. 2 is a diagram showing a catheter guide and a needle protection device having a protective casing with a compression-molded polymeric catheter Figure 21 is a cross-sectional view through the embodiment of the housing of Figure 20; Figure 22 is a vertical cross-sectional view of the housing embodiment of Figure 2 through the green; Figure 2 L v through the needle protection device and the needle Vertical sectional view of the protective device in the -unexpanded position; 148249-990811. Doc -33- I375578 Figure 24 is a vertical cross-sectional view showing the through-injection Τ颂俅D and the needle protection device in a deployed position; Figure 25 is a view showing the through-injection 'protecting D device and the needle protection Figure 25 is a perspective view showing the components of the injection needle protection device;

27 to 3 are a cubic cross-sectional view showing an introducer equipped with the needle protection device; the different S diagrams η to 32 show the cube of the winged catheter guide equipped with the needle protection device FIG. 33 to FIG. 34 are schematic cross-sectional views showing a needle protecting device applied to one of the Y-implanted valleys; FIG. 3 is a cross-sectional view of the needle protecting device; , „ 哀 置 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 10112 5 , 50 ' 80 , 280 10 , 210 , 510 ' 1010 11 12 , 82 , 80 , 91 , 92 , 136 , 212 , 292 , 522 , 2136 Vertical cross section of the embodiment of the spring spherical catheter device needle shaft Surface 148249-99081 丨doc •34 1375578

14 15 , 20 ' 25 , 60 , 99 , 135 ' 220 ' 225, 252, 256, 288, 525, 1025, 2115 1 6 : holding or carrying space 18 , 21 , 74 , 120 , 140 , 150 , 920 , 937 , 940, 1002, 2120, 2150 19 , 20 ' 22 , 157 , 522 , 2157 20 , 52 , 55 , 76 , 88 , 97 , 115 , 130 , 135 , 215 , 254 , 258 , 285 , 297 , 802 ' 907 , 935 ' 2120 , 2121 , 2135 cross section tip end wall end

22, 60, 70, 90, 93, 112, 222, 260, 290, 913 ' 2112 24 30 , 40 , 230 , 240 45 , 245 , 512 , 845 , 1045 50 , 52 , 82 , 282 54 , 77 , 85 , 118, 130, shaft slanted needle hub hub end of the inner cavity spheroidal hub 148249-990811.doc • 35· 1375578 505 ' 804 ' 909 , 930 , 947 ' 2130 > 8120 65 ' 86 ' 250 , 255 , 286 , conduit 606 , 700 ' 704 ' 950 , 955 , 960 70 > 270 79 90 , 110 ' 900 > 2110 ' 6110 , 7110 , 10110 93 ' 293 95 > 295 ' 905 100 ' 910 ' 2100 101 , 800 102 104 , 105 , 2104 , 2105 155 , 955 225 272 , 274 , 2117 275 , 604 276 502 506 ' 508 514 516 hole cantilever needle guard groove first housing cover , second housing piston rolling body stepped area Edge cusp flange back annular space syringe adapter restricting member rail 148249-990811.doc -36- 1375578

518 Brake member 520 Channel 600 sheath 602, 702, 802, 804 'wing 1004 603 slit 751 tweezer 806 handle 812, 814, 808 ' 810 projection 940 plastic material 945 barb 956, 750 wire 6000 Interval 73 '800, 1075 reins

148249-990811.doc -37-

Claims (1)

胤 8 8 8 胤 胤 胤 胤 胤 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 a distal end, a sharpdistalend, and an outer surface; a needle protection device (Needleshield assembly) comprising: a first housing having an outer wall and an inner cavity The cavity has a longitudinal axis and is sized such that the first housing is longitudinally slidable along the outer surface of the needle, the first housing being fitted with a load bearing space for carrying a needle stop. The load bearing space includes a tool at a protected position that limits radial movement of the needle stop relative to the longitudinal axis of the needle; the needle stop ' is disposed in the load bearing space; the spring, βχ is placed in position In an unprotected position, the spring is biased to the needle stop such that the needle broadcast block receives the longitudinal axis toward the needle, and the towel, the material receiving position, a head block is partially located in the inner cavity, whereby the tip _ tip is exposed from the needle guard; and Λ w π, the needle guard (4) moves at the tip of the needle ίτα is killed by the ancient master 1 ransong, _ 2 · as claimed in the patent specification. The needle device described in the whistle of item i, wherein the carrier is configured to allow the needle to protect the field from the longitudinal axis of the needle, Limited Movement" $3. 头 ^ ^ Head device as described in the scope of the patent application, wherein the side bearing system is configured to allow the needle to be relative to the longitudinal direction of the needle (four) 148249- 10I0618.doc 丄375578 Limited surround motion. The load space configuration in the needle m of claim 1 is such that the needle stop is allowed to make limited longitudinal movement relative to the longitudinal axis of the needle. 5. The invention comprises an opening on the first casing as described in claim 1 of the patent application, wherein the outer wall extends toward the inner cavity as described in claim 5 of the scope of the patent application. The needle device, wherein the bearing air port accommodates the needle stop. A needle device, wherein the opening is from the needle device of claim 5, wherein the opening is shaped to allow for a limited radial movement of the longitudinal axis of the needle (4). 8. The needle device of claim 5, wherein the needle device is shaped to permit circumferential movement of the needle stop relative to the needle. Wherein the opening is limited by the longitudinal axis. 9. The needle device of claim 5, wherein the plastic device is configured to permit longitudinal movement of the needle stop relative to the needle limit. Wherein the opening is made by the longitudinal axis. 10. The needle device of claim i further comprises a cover which is attached to the housing. The needle device of the first aspect of the invention, wherein the needle device has a side hole, wherein the cover has a protective position from the side hole. protruding. The needle device of the first aspect of the invention, wherein the spring is 148249-10丨〇618.doc 1375578 a compression spring (Compression Spri.ng). U. For example, the acupuncture device described in the scope of the patent application is a Torsions pring. I4. The needle device of claim 1 is coaxial with the first housing. The needle device according to claim 1, wherein the needle device is disposed on the outer wall of the first casing. 16. The needle device of claim 1, wherein the needle device is parallel to the longitudinal axis of the needle. 17. The needle device of claim 1, wherein the needle device is coaxial with the needle. The device, wherein the device is configured to: move, limit the needle stop relative to the needle 19. The needle according to the scope of claim i ^ TM .. device wherein the needle is associated with the device The include-protrusion (0verh T颂 ❹ ❹ 2, g) the large exit is in the protected position 'radially limits the movement of the needle. & with respect to the longitudinal axis of the needle 20. As described in the scope of the patent application:: a needle-casting block relative to the longitudinal direction of the needle: 21. The needle device according to claim 5 The opening of the Hunter M body is configured to prevent the needle stop from fully entering the inner cavity. The spring is the spring of the spring. The spring is the spring in which the spring is large. The spring is 148249-10106I8.doc. The slanting device of claim 1, wherein the inner cavity is in the protected position to support the needle against the needle stop. 23. The needle device of claim i, wherein one step comprises a catheter (Catheter). 24. A syringe device syringe (Syringe) as claimed in claim 1. 25. The needle device of claim 1, wherein the needle device is a Winged needle set. 26. The Huber needle of the needle device of claim 1 of the patent application. 27. The needle device block of claim 1 is a spheroid. Further comprising further comprising: a needle (4) disposed in the middle of the needle (4), wherein the needle is a rolling element. 29. The needle garment 1 of claim 1, wherein the needle stopper is an aspherical body. 3. A medical device comprising: a needle having a longitudinal axis, an outer surface, and a sharp distal end; a needle shield comprising: a housing 'slidable on the outer surface of the needle, the first housing includes an outer wall and an inner cavity, the outer wall and the inner cavity corresponding to the longitudinal axis of the needle; a needle stop; 148249-1010618.doc carrying two compartments for carrying the needle stop and limiting the radial movement of the needle stop relative to the longitudinal axis of the needle in a protected position, the load space being - An unprotected position, maintaining the head stop (four) offset from the longitudinal axis of the needle; and - a spring biasing the needle stop toward the longitudinal axis of the needle; 'where' when the tt needle (four) guard When the uninsured sling (4) to the protected position 'causes the tip of the needle to pass through the needle stop, the needle stop portion is partially inserted into the inner cavity, thereby blocking the end of the (four) needle. J1. The medical device of item 1, then the block in contact with the unprotected position of the outer surface of the needle. 32. The medical device of claim 3, wherein the (4) elastic cyanine is applied to the needle block at the uninsured f position such that the needle stop abuts the outer surface of the needle. - The medical device of claim 30, wherein the cartridge is at the protected position, limiting the radial movement of the needle stop from the longitudinal axis of the needle. The medical device of claim 30, wherein the needle (four) guard comprises a side wall that is radially offset from the longitudinal axis of the needle, wherein the side wall limits the protected position The needle stop is offset from the radial movement of the longitudinal axis of the needle. The medical device of claim 30, wherein the protective device comprises a front wall, such that the front wall is located when the needle protecting device is in the protected position of 148249-10l06l8.d〇c 1375578 Limit the longitudinal movement of the needle stop. 36. The medical device of claim 30, wherein the load bearing space limits longitudinal movement of the needle stop relative to the longitudinal axis of the needle. 37. The medical treatment of claim 30 The device wherein the load bearing space limits circumferential movement of the needle stop relative to the longitudinal axis of the needle. 3. The medical device of claim 30, wherein the bearing space limits radial movement of the needle stop relative to the longitudinal axis of the needle. 39. The medical device of claim 30, wherein the carrying space comprises an opening formed in the first housing and extending from the outer wall toward the inner cavity. 40. The medical device of claim 30, wherein the needle guard further comprises a second housing that partially covers the first housing and the needle stop. The medical device of claim 40, wherein the second housing includes an opening, the needle stop protruding from the opening when the needle guard is in the unprotected position. 42. The medical device of claim 30, wherein the needle stop has a shaft, wherein 'when the needle guard is in the protected position, the needle stop is located in the lumen> the needle The vehicle of the stop is offset from the longitudinal axis of the needle. 43. The medical device of claim 3, wherein the dry needle block is a spheroid. 44. The medical device of claim 3, wherein the needle dry block is a rolling element. The medical device of claim 30, wherein the needle stop is an aspherical body. 46. A needle device comprising: - a needle (Niddle) comprising a longitudinal axis, a proximal end, a sharp distal end and an outer surface; a needle protection device comprising: a protective shell The body has an inner cavity slidable on the outer surface of the needle; a needle stop has a needle stop shaft; and a bearing space for carrying the needle stop, wherein the bearing space is selective Maintaining the needle stop in an unprotected position and a protected position; wherein the bearing space includes a tool at the protected position that limits radial movement of the needle stop relative to the longitudinal axis of the needle; In the protected position, the needle stop is partially located in the lumen and the needle stop axis is offset from the longitudinal axis of the needle. 47. The needle device of claim 46, wherein the load bearing space comprises a spring that faces the longitudinal axis of the needle and applies a biasing force to the needle stop. 48. Apply the outer surface as described in claim 47, in the unprotected position. a needle device, wherein the spring-bias biases the needle stop against the 49.. When the needle according to claim 47 is in the protected position, the ridge p, when the distal spring The ridge limits the needle stop to eccentrically deviate from the movement of the longitudinal axis of the needle by 148249-l0I0618.doc 1375578. The needle is coaxial with the needle as described in claim 47. The device, wherein the spring and the phantom, when the space described in claim 46 is in the protected position, the carrier=in which the longitudinal (four) moving block of the carrier is deviated from the needle, such as the patent application scope The needle device body of claim 46 includes a wall that is positionally retainable from the longitudinal axis of the needle in the protected position. The eccentricity of the ten-segment block 53. According to the scope of claim 46, the needle-bearing block is fixed relative to the (four) wheel of the needle, and the medium-bearing space 54 is as described in claim 46 of the patent application scope. ,'mobile. The stipulation of the smuggling-s is provided by the α , , , , , , , , , , , , , , 四 四 四 四 四 四 四 四 四 四 四 四 纵向 纵向 纵向 纵向 纵向 纵向 纵向 纵向 纵向 纵向 纵向 纵向 纵向 纵向The block is a spheroid. The needle end of the device 1 is 56. The needle is placed as described in claim 46 of the patent scope, and the block is a rotating body. ~10a 57. The needle block as described in claim 46 is an aspherical body. A ten-turn device wherein the needle head recognizes a tip-protecting method having a needle on one of the longitudinal axes for use in a medical device, the method comprising the steps of: VIII (4) providing a needle stop and carrying the same One of the needle stops carries space; ^ W in the protected position limits the radial movement of the needle stop relative to the needle 148249-10lQ6i8.doc 1375578 vertical axis; (C) at an unprotected position, The 掊 掊 i i i 符 该 该 该 该 该 该 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向 径向讦 the needle stop is radially opposite the longitudinal axis of the needle; Moving the position to the needle stop, thereby blocking the needle (f) from a needle retaining device from the unprotected position, causing the tip of the needle to enter the needle stop portion The tip in the lumen. The method of claim 58, wherein the needle is placed in the unprotected position in contact with the outer surface of the needle. The method of claim 58, wherein the projecting at the unprotected position applies a bias to the needle stop such that the needle stop abuts the outer surface of the needle. 61. The method of claim 58 wherein step (4) comprises the step of: limiting the radial movement of the needle stop phase (four) of the longitudinal axis of the needle. 62. The method of (4), wherein the step (4) comprises the following steps: limiting the movement of the needle stop relative to the needle. The step (a) includes the encircling of the longitudinal axis. 63. The method of claim 58, wherein the step J is to limit movement of the needle stop relative to the needle. The method of claim 58 wherein the needle stop has an axis at which the axis of the needle stop deviates from the method of claim 58. The longitudinal axis of the needle. 65. A method of protecting a tip having a tip of a needle for use in a needle guard, the method comprising the steps of: providing a load bearing space for carrying a needle stop; limiting the protected position Radial movement of the needle stop relative to the longitudinal axis of the needle; maintaining the needle stop in an unprotected position; sliding the needle relative to the needle stop; increasing the needle stop from the non-fraction Moving the vine position to the protected position 'at the protected position, the needle edge stop of the cleavage offsets from the longitudinal axis of the needle; and by limiting the needle stop relative to the needle The radial movement of the longitudinal axis maintains the needle stop in the protected position. 06. The method of claim 65, further comprising the step of: biasing the needle block to cause the needle stop to face the longitudinal axis of the needle. 67. The scope of claim 65, wherein the method further comprises the following steps: limiting the circumferential movement of the needle stop relative to the longitudinal axis of the needle. 68, as claimed in claim 65. ", 喟 (4), the step-by-step includes the following steps. Limiting the needle stop relative to the sway. The longitudinal movement of the longitudinal axis of the hexagram needle 148249-I010618.doc 1375578 69. The method of claim 66, wherein: at the protected position, the branch # progression includes the following steps. Cut-to-(four) needle stop 7〇. As described in claim 66, 肆: Selection—needle diameter and – needle stop size The following step sizes are inversely proportional to the diameter of the needle. a needle stopper 71. The square ball described in claim 66, and the method further comprises a needle head having a head diameter and a spheroid diameter, '. selecting a needle diameter Inverse ratio. The spheroidal straight technique is straight with the needle. 72. As claimed in the scope of the patent application or in the item "where the needle holder is a spheroid, and the spheroid is _ straight# It is inversely proportional to the diameter of one of the needles. 73. If you want to use the f-therapy device described in the first section, the towel block is a spheroid and the diameter of one of the spheroids is inversely proportional to the diameter. 148249-1010618.doc