Source: https://patents.justia.com/patent/6325781
Timestamp: 2019-10-19 22:57:11
Document Index: 356995117

Matched Legal Cases: ['art 24', 'art 23', 'art 24', 'art 13', 'art 17', 'art 17', 'art 16', 'art 20', 'art 17', 'art 17', 'art 16', 'art 17', 'art 17', 'art 17', 'art 17', 'art 17', 'art 36', 'art 40', 'art 37', 'art 37', 'art 40', 'art 37', 'art 33', 'art 31', 'art 31', 'art 37', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 33', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 46', 'art 46', 'art 45', 'art 47', 'art 47', 'art 45', 'art 36', 'art 36', 'art 37', 'art 40', 'art 36', 'art 40', 'art 40', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 36', 'art 45', 'art 36']

US Patent for Puncturing device Patent (Patent # 6,325,781 issued December 4, 2001) - Justia Patents Search
Justia Patents Cover Or Protector For Body Entering Conduit Movable Axially Relative To One AnotherUS Patent for Puncturing device Patent (Patent # 6,325,781)
Oct 5, 1999 - Mitsubishi Pencil Kabushiki Kaisha
FIG. 1 is a sectional view showing an unused state of a puncturing device of the invention, where an indwelling needle is contained in an outer sleeve 5 and pulled in by a spring 4 to such a position that the needle tip will not touch a cap 9 while projections 3a are rotated and plunged into locking portions 8 (FIG. 2) so that the device is locked so as not to be used.
FIG. 3 is a sectional view showing a usable locked state where the above locked state is released and the incorporated indwelling needle is set by pushing out finger-held projections 3a to the predetermined position along guide slots 6 (FIGS. 1 and 2) provided for outer sleeve 5 and then rotating projections 3a so as that they are plunged into L-shaped locking portions 7 (FIG. 2) so that the device is locked for use. Since the needle is locked while being tensioned by spring 4, the needle will not sway during use and the outer sleeve is long enough to allow the operator's hand to hold it tightly, thus providing sufficient stability.
FIG. 5 is an enlarged view of the area around locking portion 7 shown in FIG. 2, illustrating the positional relationship between projections 3a, guide slot 6 and locking portion 7.
With the puncturing device of this embodiment, metallic inner needle element 2 to be disposed of after insertion of outer needle element 1 into the human body can be collected instantly inside outer sleeve 5 by a single-hand operation by virtue of the restoring force of spring 4. In the stored state, the needle is pulled in, to a position that disallows the needle tip to touch cap 9, then projections 3a are rotated and plunged into locking portions 8 so that the device is locked so as not to be used. Therefore, the metallic inner needle element will not be damaged during transport of the product. Further, since this mechanism enables the needle to be pulled back by the spring after use and locked, it is possible to prevent the needle from being unintentionally protruded from the outer sleeve during the process of disposal and hence protect health care workers from the risk of needlestick injuries.
The indwelling needle is set by pushing out projections 3a to the predetermined position along guide slots 6 formed in outer sleeve 5 then rotating projections 3a so as to be plunged into L-shaped locking portions 7 so that the device is locked for use. Further, the needle is locked by locking portions 7 as it is tensioned by spring 4. Therefore, the needle will not sway during use. Also, outer sleeve 5 is long enough to allow the operator's hand to hold it tightly, thus providing sufficient stability.
Indwelling needle 22 comprises: an outer needle element 24 for indwelling composed of a base part 24a and a needle 24b of a soft synthetic resin capillary tube; and an inner needle element 23 composed of a base part 23a and an inner needle 23c of a metallic capillary tube. Needle 23c of inner needle element 23 is fitted through needle 24b of outer needle element 24 so that the tip of needle 23c is exposed appropriately from the tip of needle 24b while base part 24a of outer needle element 24 is fitted on a shank 23b of inner needle element 23.
As seen in this figure, outer sleeve 11 has an elongated guide slot 12 formed on the peripheral surface thereof extending axially and opening to the rear. An engagement window 13 is formed continuous from the proximity of the front end of guide slot 12 so as to form an L-shape configuration. A resiliently deflectable piece 13b (FIG. 15) is formed by provision of a cut-in window 13c (FIG. 15) in the front part of engagement window 13. This deflectable piece 13b has an engaging part 13a projecting to the rear therefrom (see FIG. 15). There is another engagement window 14 which is also formed continuous from the rear of guide slot 12 so as to form an L-shape configuration. This engagement window 14 has an fitting slot 14a extending to the rear from the rear end thereof. The opposing sidewalls defining the opening of fitting slot 14a are formed with saw-toothed engaging projections 14b (see FIG. 19).
Formed on the rear outer peripheral portion of outer sleeve 11 are a pair of flat portions 15a (only one of them can be seen) which each has an engaging slot 15 having saw-toothed engaging projections. Flat portions 11a are formed on the inner peripheral side of outer sleeve 11, at appropriate sites running in the axial direction.
An actuator 16 is a tubular configuration having a passage hole at the axial center with ribs 16a formed on the outer periphery thereof at appropriate sites running in the axial direction. A projected actuator part 17 extending in the axial direction is formed on one side of the outer periphery of actuator 16. This projected actuator part 17 has a rectangular engagement window 17a cut and passing through the thickness thereof. Actuator 16 further has a cylindrical attachment part 16b at the front end thereof.
Spring 19 has a coil portion 19a in the middle portion thereof and a pair of coil end turns 19b and 19c at both ends thereof having an appropriately greater diameter than the coil portion 19a.
Engaging piece 20 is of a ring, and is composed of a rear cylindrical portion 20a and a front cylindrical portion 20c which is smaller in diameter than rear cylindrical portion 20a. Rear cylindrical portion 20a has an engaging groove portion 20b of a cutout running perpendicular to the axial direction and having an axial cross-section of T with its top facing forward.
Tail plug 21 also has an engaging groove portion 21b of a cutout running perpendicular to the axial direction and having an axial cross-section of T with its top facing rearward. Further, a pair of engaging portions 21c are provided on the cylindrical surface of tail plug 21 at right angles with engaging groove portion 21b. Each engaging portion 21c is formed of a rib 21d and a plate piece 21e, arranged in a T-shape.
Spring 26 has a coil portion 26a in the middle portion thereof and a pair of flattened loop-shaped hooking portions 26b and 26c at both ends thereof.
Engaging piece 27 and tail plug 28 are basically of the same structure but may partially differ depending on the attachment conditions of the outer sleeve and the actuator. Here, assuming the same structure, engaging piece 27 will be described. A cylindrical portion 27a has a sagittate engaging portion 27b at its one end, which fits into and couples with hooking portion 26b of spring 26 as the front end of sagittate engaging portion 27b resiliently enlarges hooking portions 26b until hooking portion 26b engages the stepped portion 27c of engaging portion 27b.
Returning to the above spring assembly 18, the spring assembly 18 is joined by fixing cylindrical part 20c of engaging piece 20 to the rear end of actuator 16 (examples of fixing methods include press fitting, welding, bonding, screw fitting, and other joinings by using an engaging portion between the two elements). In this embodiment, two parts, or actuator 16 and engaging piece 20 are used to ensure assembly performance of the puncturing device and ease of formation of the elements, but the actuator and engaging piece may be integrally formed. Actuator 16 with spring assembly 18 joined thereto is inserted into the bore of outer sleeve 11 from the sleeve's rear end while ribs 21d of tail plug 21 fit into tail plug engaging slots 15 formed at the rear end of outer sleeve 11 so that ribs 21d are caught and fixed inside tail plug engaging slots 15. Though not illustrated in detail in the figure, both of the opposing sidewalls defining tail plug engaging slot 15 is formed with a saw-toothed projection defined by an inclined surface and a perpendicular surface. That is, the inclined surface of the projection is located on the insertion side of rib 21d (FIG. 13) of tail plug 21, and the rib 21d is inserted as it resiliently enlarges the tail plug engaging slot 15 until the rear end of the rib becomes engaged and fixed by the stepped portion defined by the perpendicular surface of the projection.
As understood from comparison between FIGS. 17 and 18, in the case of FIG. 17, the outer peripheral portions of ribs 16a formed at appropriate sites on the outer periphery of actuator 16 are located an appropriate clearance away from the inner periphery of the outer sleeve 11 so that actuator 16 can slide. In contrast, in the case of FIG. 18, the outer peripheral portions of ribs 16a are in contact with flat portions 11a formed on the inner periphery of the outer sleeve 11 so that actuator 16 becomes fixed relative to outer sleeve 11 without instability. The means of abutment and engagement between the inner periphery of outer sleeve 11 and the outer periphery of the actuator part 17 when projected actuator part 17 is turned until it is engaged with engagement window 13 should not be limited to the above configuration but can be created by providing projections and grooves therebetween in an appropriate combination.
The state shown in FIG. 9 is that shown in FIG. 18 where indwelling needle 22 shown in FIG. 10 is attached to attachment part 16b of actuator 16. This state illustrates the usage state of the puncturing device as already stated above.
When, with actuator 16 retracted, actuator part 17 is turned so as to abut engagement window 14, the peripheral portions of ribs 16a abut on, and become engaged with, the flat portions formed on the inner periphery of the outer sleeve 11 so that actuator 16 will be fixed relative to outer sleeve 11 without instability, as in a similar manner to the case where actuator part 17 abuts engagement window 13 as stated above.
In this state, when actuator part 17 is further moved back to fit into fitting slot 14a which is formed further behind engagement window 14, engaging projections 14b fit into the engagement window 17a cut through actuator part 17. That is, since fitting slot 14a has a pair of saw-toothed projections 14b as shown in FIG. 19, their perpendicular surfaces engage the rear end of engagement window 17a, thus prohibiting any attempted moving of actuator part 17 forward.
FIGS. 20 through 23 are perspective views showing a puncturing device of the third embodiment of the invention. FIG. 21 shows an unused state of a puncturing device where an outer needle element 40 is mounted at the front end of an outer sleeve 31 by means of a movable ring 31e while an actuator part 36a of an actuator 36 is engaged with an engagement window 33 (FIG. 20) so as to keep the tip of an inner needle 42 projected from the tip of outer needle 41.
Here, the indwelling needle comprises: outer needle element 40 composed of a base part 40a and an outer needle 41 of a soft synthetic resin capillary tube; and an inner needle 42 of a hard, e.g., metal, capillary tube. Inner needle 42 is fitted through outer needle 41 of outer needle element 40 so that the tip of inner needle 42 is exposed appropriately from the tip of outer needle 41.
Further, as shown in FIG. 20, inner needle 42 is fixed to an attachment part 37 integrally formed at the front end of actuator 36. Ribs 37a are formed at appropriate sites on the outer periphery of attachment part 37 so that the outer peripheral portions of ribs 37a engage the inner periphery of a base part 40a (FIG. 21) of the outer needle element so that inner needle 42, hence actuator 36 can be attached so as not to easily drop off from outer needle element 40. Here, it is also possible to provide an attachment part 37 separately from actuator 36 so as to form a unit of an indwelling needle separated from the actuator and join the attachment part to the actuator.
Outer sleeve 31 has an elongated guide slot 32 formed on the peripheral surface thereof extending axially and opening to the rear. An engagement window 33 is formed continuous from the proximity of the front end of guide slot 32 so as to form an L-shape configuration. A resiliently deflectable piece 33b is formed by provision of a cut-in window 33c in the front part of engagement window 33. This deflectable piece 33b has an engaging part 33a projecting to the rear therefrom.
A rectangular shaped grip 31a is formed in the front part of outer sleeve 31. This grip 31a has a flat rim 31b on the same side as engagement window 33. Further, an attachment part 31c is formed in the front end of grip 31a and an opening 31d is formed in the center of attachment part 31c.
Provided inside an opening 31d is a movable ring 31e (FIG. 21) which moves in only the axial direction with respect to outer sleeve 31, being limited by the combination of ribs and grooves formed therebetween. Movable ring 31e is preferably prevented from falling out from opening 31d. This means can be easily attained so that description is omitted.
The bore of movable ring 31e is formed with an unillustrated spiral cam portion which will engage an aftermentioned spiral cam portion 36e formed on actuator 36.
There is another engagement window 34 which is also formed continuous from the rear of guide slot 32 so as to form an L-shape configuration. This engagement window 34 has an fitting slot 34a extending to the rear from the rear end thereof. The opposing sidewalls defining the opening of fitting slot 34a are formed with saw-toothed engaging projections.
Actuator 36 has a cylindrical portion at the front part thereof with spiral cam portion 36e formed on the outer periphery of the cylindrical portion. Attachment part 37 having ribs 37a at appropriate sites on the outer periphery thereof are formed further to the front of the cylindrical portion.
Actuator 36 further has ribs 36c at appropriate sites in the rear cylindrical portion having a slightly greater diameter and a projected actuator part 36a extending in the axial direction, on one side on the outer periphery thereof. This projected actuator part has a rectangular engagement window 36b cut and passing through the thickness thereof.
Actuator 36 further has an attachment groove 36d at the rear end thereof for fixing the front end of a spring 38.
With this configuration, when actuator part 36b of actuator is turned, cam portion 36e engages the cam portion formed on movable ring 31e (FIG. 21) and moves movable ring 31e forward.
A tail plug 39 has an attachment groove 39d at the front cylindrical end thereof for fixing the rear end of spring 38. This attachment groove has a similar structure to attachment groove 36d formed at the rear end of actuator 36.
Further, provided on the peripheral surface of the cylindrical portion of the tail plug are a pair of engaging portions 39a, each of which is formed of a rib 39b and a plate piece 39c, arranged in a T-shape.
Actuator 36 and tail plug 39 joined by spring 38 is inserted into the bore of outer sleeve 31 from the sleeve's rear end so that ribs 39b of tail plug 39 fit into engaging slots 35 formed at the rear end of outer sleeve 31 and ribs 39b are caught and fixed inside tail plug engaging slots 35. Though not illustrated in detail in the figure, either of the opposing sidewalls defining engaging slot 35 is formed with a saw-toothed projection defined by an inclined surface and a perpendicular surface. That is, the inclined surface of the projection is located on the insertion side of rib 39b of tail plug 39, and as the rib is inserted it resiliently enlarges the engaging slot until the rear end of the rib becomes engaged and fixed by the stepped portion defined by the perpendicular surface of the projection.
Actuator part 36a of actuator 36 is fitted in, and projected outwardly from, guide slot 32 of outer sleeve 31 so that actuator part 36a is slid forward by the fingers along guide slot 32. When actuator part 36a is turned while actuator part 36a being abutted on the front end of guide slot 32, it is slidably fitted into engagement window 33 of the outer sleeve. At the same time, engaging part 33a engages and fixes actuator part 36a so as to prevent it from easily rotating and disengaging from engagement window 33.
When the outer peripheral portions of ribs 36c formed at appropriate sites on the rear outer periphery of actuator 36 are located an appropriate clearance away from the inner periphery of outer sleeve 31, the actuator can slide. In contrast, when actuator part 36a is slidably fitted into engagement window 33 of the outer sleeve, the outer peripheral portions of ribs 36c are in contact with flat portions (not shown) formed on the inner periphery of outer sleeve 31 so that actuator 36 becomes fixed relative to outer sleeve 31 without instability.
Upon insertion of actuator 36 into outer sleeve 31, tail plug 39 may be turned in the direction indicated by the arrow V1 and fixed to the rear end of outer sleeve 31 after fitting actuator part 36a into guide slot 32, so as to allow spring 38 to exert a twisting force in the rotational direction. By this setting, when actuator 36 is moved backward and positioned at engagement window 34, actuator part 36a will automatically fit into engagement window 34 by virtue of the restoring force or the twisting force of spring 38. The strength of this twisting force can be adjusted as appropriate by changing the rotated angle of tail plug 39 in such a range that the actuator part 36a will not come off easily due to touch, vibration and other interference during handling.
Referring to FIG. 21, outer needle element 40 is mounted to an attachment 31c at the front end of outer sleeve 31 with inner needle 42 inserted therethrough. A cap 43 is added and covers outer needle element 40 and is fixed to attachment 31c as shown in FIG. 22.
As shown in FIG. 22, cap 43 has a bar-shaped stopper 44 on the insertion side thereof. When the cap is fitted, the inner side of stopper 44 abuts the aforementioned flat rim 31b of grip 31a so that cap 43 can be fixed so as not to turn relative to outer sleeve 31 while the side face of stopper 44 substantially abuts the side face of actuator part 36a so that the engagement between actuator part 36a and engagement window 33 will not be disengaged easily even if an external force is applied to actuator part 36a.
The means for stopping the rotation of cap 43 relative to the outer sleeve will not be limited to the above embodiment. That is, any engagement will do which will stop the relative rotation of the inner cap surface to the outer periphery of the attachment of the outer sleeve. Further, the stopper need not be of a bar-shape, but a slot which will have actuator part 36a fitted therein may be formed on the end part on the inserted side.
First, an actuator 45 has an attachment part 46 at the front part thereof. This attachment part 46 has ribs 46a formed axially extending at appropriate sites on the outer periphery thereof. Actuator 45 further has ribs 45c at appropriate sites in the rear cylindrical portion having a slightly greater diameter and a projected actuator part 45a extending in the axial direction, on one side on the outer periphery thereof. Formed in the front part of the relatively large-diametric rear cylindrical portion is a cam portion 45b having mountain-like projections (the cam shape should not be limited to this).
A movable ring 47 is arranged inside opening 31d. Cylindrical part 47a of movable ring 47 has a rib 47c extending axially on the peripheral thereof, which will mate with an unillustrated groove formed on the inner wall of opening 31d so that movable ring 47 will slide in only the axial direction with respect to outer sleeve 31.
Provided on the rear end of cylindrical part 47a of movable ring 47 is a cam portion 47b having notches which will mate with cam portion 45b formed on actuator 45.
In a state before puncture shown in FIG. 25, cam portion 45b and cam portion 47b engage with each other. When actuator part 45a is turned from this state as shown in FIG. 26, cam portion 45b will disengage from cam portion 47b so as to move movable ring 47 forward (the change of the relationship between the cam portions will make no other difference).
With the puncturing device of the third embodiment, hard, e.g., metallic, inner needle element 42 to be disposed of after insertion of soft, outer needle element 40 into the human body can be collected instantly inside outer sleeve 31 by a single hand operation by virtue of the restoring force of spring 38. That is, the collection can be done by only rotating actuator part 36a by the fingers relative to outer sleeve 31, so as to bring the actuator part from engagement window 33 of the outer sleeve to guide slot 32.
Immediately before the rotation of actuator part 36a, ribs 37a formed on the attachment part 37 of the actuator engage tightly, due to friction, the inner surface of base part 40a of the outer needle element. As actuator part 36a is rotated, ribs 37a slide with respect to the inner surface of base part 40a so that friction therebetween decreases and cam portion 36e moves movable ring 31e forward to thereby smoothly push outer needle element 40 forward. Therefore, the retention of inner needle 42 within outer needle element 40 is released by the restoring force of spring 38, and hence inner needle 42 is retracted, together with actuator 36, into outer sleeve 31.
In connection with this, it is also possible to provide an active engagement between ribs 37a and the inner surface of base part 40a instead of frictional engagement, so that the engagement will be completely freed when actuator part 36a starts to be rotated.
When, with actuator 36 retracted, actuator part 36a is turned so that it abuts engagement window 34, the outer peripheral portions of ribs 36c abut on, and become engaged with, the flat portions formed on the inner periphery of the outer sleeve so that actuator 36 will be fixed without instability, as in a similar manner to the case where actuator part 36a abuts engagement window 33 as stated above.
In this state, when actuator part 36a is further moved back to fit into fitting slot 34a which is formed further behind engagement window 34, engaging projections fit into engagement window 36b cut through actuator part 36a. That is, since fitting slot 34a has a pair of saw-toothed projections, their perpendicular surfaces engage the rear end of engagement window 36b, thus prohibiting any attempted moving of actuator part 36a forward. In this way, it is possible to restrict the hazardous attempt of reusing the puncturing device after it has been once used.
However, as shown in FIG. 26, as actuator part 45a is rotated, cam portion 45b moves movable ring 47 forward to smoothly push outer needle element 40 (by about 1 to 1.5 mm). This situation is illustrated in FIG. 30.
As shown in FIG. 31, when outer needle 41 has advanced relative to inner needle 42, tip 41a of the outer needle covers the bevel or cutting edge 42a of the inner needle, in an appropriate manner.
In either the above third or fourth embodiment, movable ring 31e or 47 are interposed to advance outer needle element 40. However, an outer needle element 40 may be formed with a cam portion in its base part whilst its rotation being locked with respect to outer sleeve 31 so as to directly advance outer needle element 40 by the rotation of actuator part 36a or 45a.
Thus, the puncturing device of the invention is configured and operates as above. Therefore, use of this puncturing device allows the needle after use to be collected into the outer sleeve immediately after the application to the human body, by only a simple, single hand operation. As a result, the inner needle, or hard, e.g., metallic, inner needle element can be kept safe, so that it is possible to protect health care workers from needlestick injuries. Further, conventional puncturing devices have been cased merely storage, but a simple package as used with a typical injection needle can be used for the puncturing device of the invention, thus leading to an attainment of a low price. From these viewpoints, the invention is markedly effective in protecting health care workers from secondary infection, which is posing a social problem.
1. A medical puncturing device for an indwelling needle, comprising:
a spring interposed between the rear end of the actuator and the rear end of the outer sleeve for urging the indwelling needle to the retracted position inside the outer sleeve, wherein the indwelling needle can move in and out through the opening of the outer sleeve by the actuation of the actuator; and the guide slot further has an engagement window formed continuous from the proximity of the front end thereof forming an L-shaped configuration; and the indwelling needle is kept in the projected state with respect to the outer sleeve when the actuator is moved forward and the projected actuator part formed on the actuator is turned so as to be engaged with the engagement window.
2. A puncturing device for an indwelling needle, the device comprising:
an indwelling needle having an indwelling outer needle element formed of a soft synthetic resin capillary tube and disposed at a front end of the outer sleeve and a puncturing inner needle of a hard capillary tube fitted through the outer needle element;
an actuator integrally formed at a rear end of the inner needle and arranged inside the outer sleeve and the actuator having a projected actuator part; and
wherein the outer sleeve has a guide slot cut along the axial direction on a peripheral surface thereof and an engagement window formed continuous from a proximity of the front end thereof forming an L-shape configuration, the projected actuator part being fitted through the guide slot, wherein a tip of the inner needle is kept in a projected state from a tip of the outer needle element when the projected actuator part is engaged with the engagement window;
wherein a spring urging the inner needle to the retracted position inside the outer sleeve is provided between the rear end of the actuator and the rear end of the outer sleeve;
wherein the spring exerts twisting force on the actuator so that the actuator turns in the rotational direction, and the actuator is automatically fitted and engaged into the rear engagement window due to the twisting force of the spring when the actuator moves back to the retracted position.
3. The puncturing device according to claim 1 or 2, wherein the actuator part is turned and slidably fitted into the engagement window so as to be engaged therein and in the engaged state, one end of the actuator part is mated with one end of the engagement window forming a disengageable engagement which prevents easy removal of the actuator part from the engagement window.
an indwelling needle including an indwelling outer needle element formed of a soft synthetic resin capillary tube and having a puncturing inner needle element of a hard capillary tube fitted through the outer needle element;
an outer sleeve having a guide slot out along the axial direction on the peripheral surface thereof and an engagement window formed continuous from the proximity of the front end thereof forming an L-shaped configuration;
an actuator integrally formed at the rear end of the inner needle and arranged inside the outer sleeve and the actuator having an actuator part,
wherein the indwelling needle is kept in the projected state when the actuator part of the actuator is engaged with the engagement window at the front end, and the outer needle is advanced relative to the inner needle while the inner needle is retracted together with the actuator into the outer sleeve when the actuator part is turned from the L-shaped engagement window to the guide slot side,
wherein a movable ring which can move only in the axial direction with respect to the outer sleeve is arranged at the front opening of the outer sleeve and in front of the actuator while cam portions are formed on the movable ring and on the actuator, and when the actuator is turned, the movable ring moves forward so that its front end urges the rear end of the outer needle element to advance the outer needle element.
8. The puncturing device according to claim 7, wherein when the outer needle is advanced with respect to the inner needle, a tip of the outer needle covers a beveled cutting edge of the inner needle.
5498245 March 12, 1996 Whisson
5749860 May 12, 1998 Kyte
Hei 10-15074 June 1998 JP
Patent number: 6325781
Inventors: Hiroshi Takagi (Yokohama), Hitoshi Suzuki (Yokohama), Kentaro Takemae (Kawasaki)
Application Number: 09/412,722
Current U.S. Class: Cover Or Protector For Body Entering Conduit Movable Axially Relative To One Another (604/198); Having Cover Or Protector For Body Entering Conduit (604/164.08); Having Biasing Means For Urging Body Piercer, Obturator, Or Stylet (604/164.12)