JP2008237622A - Puncture instrument and puncture instrument set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a puncture instrument and a puncture instrument set, which are capable of preventing a user from carelessly detaching a puncture device. <P>SOLUTION: This puncture instrument 10 is used by mounting the puncture device 2 which has a needle body with a sharp needlepoint 231 at the end, and a flange 215 provided on the outer circumferential side of the needle body 23. This puncture instrument 10 includes a housing 3 having an end 36 where the puncture device 2 is detachably mounted, and a cover member 13 installed displaceably relative to the end 36 and being displaceable between a first position for covering the flange 215 and a second position for exposing the flange 215, with the puncture device 2 mounted at the end, wherein the cover member 13 is configured to be positioned at a first position, when the puncture by the needlepoint 231 is performed, and be positioned at a second position, when the flange 215 is engaged with a detachment device for detaching the mounted puncture device 2 from the end 36. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a puncture device used by attaching a puncture device including a needle body having a sharp needle tip at the tip and an engaging portion provided on the outer peripheral side of the needle body, and a puncture device set including the same About.

  In recent years, with the increase in the number of diabetic patients, self blood glucose measurement in which patients themselves monitor fluctuations in daily blood glucose levels has been recommended.

  For the measurement of the blood glucose level, a blood glucose measurement device that measures the amount of glucose in the blood using an enzyme reaction is used. Prior to this measurement, the patient needs to collect his blood.

  As a method for collecting blood, after puncturing the skin of a fingertip with a puncture needle, the blood is squeezed by pressing the periphery of the puncture portion with a finger or the like.

  A puncture device including a puncture needle (lancet) and a casing for movably storing the puncture needle is used for puncturing the fingertip with the puncture needle.

  This puncture device is attached to a puncture device, and punctures a fingertip by projecting a puncture needle by operating the puncture device (see, for example, Patent Document 1).

  The puncture device described in Patent Document 1 has a ring-shaped flange formed on the outer peripheral surface thereof for the purpose of positioning to the puncture device.

  Further, when removing the puncture device from the puncture device, the removal operation can be easily performed by holding the puncture device with a finger and hooking a nail or the like on the flange (rib).

  Usually, a used puncture device is stored in a dedicated disposal box, collected at a medical institution, and then disposed of by a specialist.

  However, since the puncture device can be removed from the puncture device at an unspecified place after use by the patient, the used puncture device may be left unintentionally, and the surrounding blood contamination or blood Inconveniences such as accidental reuse of the puncture device may occur.

JP 2005-185712 A

  The objective of this invention is providing the puncture apparatus and puncture apparatus set which can prevent that a user removes a puncture tool carelessly.

Such an object is achieved by the present inventions (1) to (11) below.
(1) A puncture device used by attaching a puncture tool including a needle body having a sharp needle tip at an end and an engaging portion provided on the outer peripheral side of the needle body,
A housing;
A mounting portion provided at a distal end portion of the housing, to which the puncture device is detachably mounted;
A first position that covers the engaging portion and a second position that exposes the engaging portion with the puncture device mounted on the mounting portion so as to be displaceable with respect to the mounting portion. A displaceable cover member,
The cover member is in the first position when puncturing with the needle tip is performed, and the engagement member is engaged with a removal tool for removing the puncture device mounted on the mounting portion from the mounting portion. A puncture device configured to be in the second position when the portions are engaged.

  (2) The puncture device according to (1), wherein the cover member has a distal end projecting toward the distal end side with respect to the engagement portion at the first position.

  (3) The cover member includes a pressing portion that is pressed so as to move from the first position to the second position by the removal device when the engagement portion is engaged with the removal device. The puncture device according to (1) or (2) above.

(4) The mounting portion has a cylindrical shape,
The cover member has a cylindrical shape concentrically arranged with respect to the mounting portion, and is displaced along the axial direction of the mounting portion when displaced from the first position to the second position. The puncture device according to any one of (1) to (3), wherein the puncture device moves.

  (5) The puncture device according to any one of (1) to (4), further including a holding unit that holds the cover member in the first position.

  (6) The holding means is provided in the mounting portion, and an elastic body that biases the cover member in a direction in which the cover member is displaced from the second position to the first position. The puncture device according to (5), further including a restriction unit that restricts the movement limit.

(7) The puncture device includes a casing that accommodates the needle body so as to be movable along its longitudinal direction.
The said engaging part is a puncture apparatus in any one of said (1) thru | or (6) currently provided in the outer peripheral part of the said casing protruding in the shape of a flange.

(8) The detachment instrument includes an instrument body having an opening through which the puncture device can be inserted, and a storage space that communicates with the opening and stores the puncture device removed from the puncture device;
The puncture device according to any one of (1) to (7), further including an instrument side engaging portion that is provided near the opening and engages with the exposed engaging portion.

(9) The puncture device according to any one of (1) to (8) above,
The puncture device is detachably attached to the needle body having a sharp needle tip at the tip, and provided on the outer peripheral side of the needle body, and engages with the removal tool when removed from the puncture device. A puncture device set, comprising: a puncture device including an engaging portion that performs puncturing.

  (10) The puncture device includes a casing that accommodates the needle body so as to be movable along a longitudinal direction thereof, and is configured so that the needle tip does not protrude from the casing after puncturing with the needle tip. The puncture device set according to (9) above.

  (11) An instrument body having an opening through which the puncture device can be inserted, a storage space communicating with the opening and storing the puncture device removed from the puncture device, and provided in the vicinity of the opening. The puncture device set according to (9) or (10), further including a detachment instrument including an instrument side engagement part that engages with the exposed engagement part.

  According to the present invention, even if the user tries to remove the puncture device while the puncture device is mounted, the presence of the cover member provided in the puncture device makes it difficult to grasp the puncture device. Thereby, it can prevent that a user removes a puncture tool carelessly.

  In addition, when the puncture device set of the present invention has a removal tool, when removing the puncture device from the puncture device, the puncture device is inserted into the opening of the removal device and moved so that the puncture device approaches the removal device. Then, the puncture device can be reliably removed and the removed puncture device can be stored in the storage space of the removal instrument by simply performing an operation of separating them.

Hereinafter, the puncture device and the puncture device set of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.
FIG. 1 is a longitudinal sectional view showing a puncture device of the present invention (a view showing a state where a puncture device is mounted), and FIG. 2 is a longitudinal sectional view showing an enlarged distal end portion of the puncture device shown in FIG. FIG. 4A is a plan view, FIG. 4B is a cross-sectional perspective view, and FIG. 4 and FIG. 5 are diagrams for explaining how to use the puncture device set of the present invention. . In the following description, the left side in FIG. 1 is referred to as the “tip”, the right side is referred to as the “base end”, the lower side in FIGS.

  The puncture device set 1 shown in FIGS. 4 and 5 includes a puncture device 10, a puncture device 2 that is detachably attached to the puncture device 10, and a puncture device 2 that is attached to the puncture device 10. And a removal tool 100 for removal.

  A puncture device 10 shown in FIG. 1 has a long housing 3, a plunger 5, an adjustment unit 6, a puncture operation unit (operation means) 7, a set operation unit (operation unit) 8, and a plunger 5 at the tip. A coil spring 91 that urges the plunger 5 in the direction and a coil spring 92 that urges the plunger 5 in the proximal direction. The puncture tool 2 is detachably attached to the distal end portion (mounting portion) 36 of the housing 3 for use. Is used.

  The puncture device 2 has a tubular casing (puncture needle holder) 21 and a puncture needle 22 accommodated in the casing 21 so as to be movable in the axial direction (longitudinal direction).

  As shown in FIG. 1, the puncture needle 22 has a needle body 23 and a needle hub (hereinafter simply referred to as “hub”) 29.

The needle body 23 is provided (formed) with a sharp needle tip 231 at the tip thereof.
The constituent material of the needle body 23 is not particularly limited. For example, various metal materials such as stainless steel, aluminum or an aluminum alloy, titanium or a titanium alloy, a superelastic alloy such as a Ni-Ti alloy, and various hard materials such as polyphenylene sulfide. Examples thereof include resin materials.

  The hub 29 is provided at the plunger 5 of the puncture device 10 (connected) by being provided with a columnar hub body 291, a large-diameter portion 292 provided on the outer periphery of the base end portion of the hub body 291, and a base end portion of the hub body 291. ) To be mounted.

  The hub body 291 is fixed to the proximal end portion of the needle body 23 so that the needle tip 231 of the needle body 23 is exposed.

  The outer diameter of the large diameter portion 292 is set substantially equal to the inner diameter of the inner peripheral portion 26 on the proximal end side of the casing 21. Thereby, the position shift (axis | shaft blurring) at the time of the puncture needle 22 moving with respect to the casing 21 can be prevented.

  The mounted portion 293 is formed so as to protrude from the base end of the hub body 291. Further, the mounted portion 293 is formed with a diameter smaller than the outer diameter of the large diameter portion 292.

  The constituent material of the hub 29 is not particularly limited. For example, polyolefin such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymer, modified polyolefin, polyamide (eg, nylon 6, nylon 46, nylon 66, nylon 610). , Nylon 612, Nylon 11, Nylon 12, Nylon 6-12, Nylon 6-66), Thermoplastic polyimide, aromatic polyester and other liquid crystal polymers, polyphenylene oxide, polyphenylene sulfide, polycarbonate, polymethyl methacrylate, polyether, polyether Ether ketone, polyether imide, polyacetal, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, transpo Various thermoplastic elastomers such as isoprene-based, fluororubber-based, chlorinated polyethylene, etc., or copolymers, blends, polymer alloys, etc. mainly containing these, and one or more of these are included. It can be used by mixing.

  Such a puncture needle 22 is accommodated in the casing 21. The tip of the casing 21 is a part that comes into contact with the surface of the living body such as a fingertip, palm, upper arm, abdomen, thigh, and earlobe, and an opening (tip opening) 211 is formed. Further, an opening (base end opening) 214 is formed at the base end of the casing 21.

  Further, on the outer peripheral portion (outside) of the casing 21, when the puncture device 2 is attached to the puncture device 10, a ring-shaped (annular) flange (convex portion) that abuts against the tip 35 of the housing 3 (housing main body 30). ) (Engaging portion) 215 is formed. The flange 215 is a portion whose diameter is larger than the outer diameter of the outer peripheral portion of the casing 21, and the puncture device 2 is positioned with respect to the puncture device 10 by contacting the tip 35 of the housing 3.

  In addition, the flange 215 also has a function as an engaging portion that engages with an engaging piece (instrument side engaging portion) 310 of the removing device 100 described later.

In addition, the constituent material of the casing 21 is not particularly limited, and for example, the constituent materials described in the description of the hub 29 can be used.
The puncture device 2 as described above is attached to the puncture device 10.

  As shown in FIG. 1, the housing 3 included in the puncture apparatus 10 includes a cylindrical housing body 30 and a cap-like member 4 provided at the proximal end of the housing body 30. The housing 3 also has a function as a grip when using the puncture device 10.

  The housing 3 has a hollow portion 31 opened at the distal end. The hollow portion 31 includes a plunger 5, a coil spring 91 that biases the plunger 5 toward the distal end, and a biasing force against the plunger 5 toward the proximal end. A puncture mechanism (puncture means) having a coil spring 92 is installed (contained). With this puncture mechanism, a puncture operation is performed on the surface of the living body by the needle body 23 of the puncture device 2.

  The casing 21 of the puncture device 2 is detachably attached to the distal end portion 36 of the housing 3. That is, when the puncture device 2 is attached to the puncture device 10, the proximal end portion of the casing 21 is fitted into the distal end portion 36 of the housing body 30.

  Further, an elastically deformable plate-like puncture operating portion 7 and an index 33 are provided on the upper side of the housing main body 30 in FIG. The index 33 is arranged on the proximal end side of the puncture operation unit 7.

  An operation button 71 having a protrusion 711 protruding downward in FIG. 1 is formed at the tip of the puncture operation unit 7. An opening 32 larger than the projection 711 and smaller than the operation button 71 is formed at a position corresponding to the projection 711 of the housing body 30.

  A pair of elongated holes 34 are formed on the base end side of the index 33 of the housing body 30 along the circumferential direction. One long hole 34 is disposed on the upper side in FIG. 1, and the other long hole 34 is disposed on the lower side in FIG. 1.

The plunger 5 is installed in the housing 3 so as to be movable in the axial direction thereof.
This plunger 5 has a cylindrical connecting portion 51 at the tip portion to which the attached portion 293 of the puncture needle 22 is connected (inserted) when the puncture device 2 is attached to the tip portion 36.

  In the present embodiment, it can also be said that the connecting portion 51 and the distal end portion 36 of the housing body 30 constitute an attachment portion for attaching the puncture device 2 to the puncture device 10.

  Moreover, the plunger 5 has the 1st protrusion 56 erected in the base end part toward the lower side in FIG.

  In addition, the plunger 5 has a pair of rod-like projecting portions 52, 52 erected toward the base end side at the base end portion. A protrusion 521 is formed. One protrusion 52 is disposed on the upper side in FIG. 1, and the other protrusion 52 is disposed on the lower side in FIG.

  Further, on the upper side in FIG. 1 of the plunger 5, a rod-like lock member 53 capable of elastic deformation is provided. The lock member 53 is disposed on the proximal end side of the connecting portion 51.

  A locking portion 531 having a protrusion 532 protruding upward in FIG. 1 is formed at the tip of the locking member 53.

  When the puncture device 2 is attached to the puncture device 10 and the preparation (set) for puncture is completed, the plunger 5 is biased toward the distal end by the coil spring 91 with respect to the housing 3. The protrusion 532 is inserted into the opening 32 of the housing body 30, whereby the locking portion 531 is locked to the housing 3.

  In addition, ring-shaped flanges 54 and 55 are formed on the outer peripheral surface of the plunger 5. The flange 55 is disposed on the proximal end side with respect to the flange 54.

  When the plunger 5 moves, each of the flanges 54 and 55 slides on the inner peripheral surface of the housing body 30, whereby the posture of the plunger 5 is maintained.

  In addition, the proximal end portion of the flange 55 functions as a spring seat with which the distal end side of the coil spring 91 abuts. A tubular adjustment portion (adjustment dial) 6 is installed at the base end portion of the housing body 30 and at the distal end side of the cap-shaped member 4 so as to be rotatable in the circumferential direction of the housing body 30.

  A pair of support portions (not shown) are formed on the inner peripheral surface of the adjusting portion 6, and these support portions have ring-shaped puncture depths that abut against the protrusions 56 of the plunger 5 during puncture. A control plate (second protrusion) 61 is formed.

  The puncture depth control plate 61 has a portion in which the axial position of the abutting surface that abuts against the protrusion 56 of the plunger 5 is different, whereby the puncture depth control plate 61 is moved to the surface of the living body by the puncture needle 22 (needle tip 231). Puncture depth (= projection amount of the puncture needle 22 from the opening 211) can be adjusted.

  The adjustment unit 6 and the protrusion 56 of the plunger 5 constitute an adjustment mechanism. By this adjustment mechanism, the amount of protrusion of the puncture needle 22, that is, the surface of the living body, according to the individual difference of the blood sampler (inspected person) and the puncture site The puncture depth can be adjusted.

  A portion on the distal end side of puncture depth control plate 61 functions as a spring seat with which the proximal end side of coil spring 91 abuts. When the puncture device 2 is not attached to the puncture apparatus 10, a coil spring 91 is inserted between the puncture depth control plate 61 and the flange 55 in a substantially unloaded state (natural length).

  In addition, a plurality of grooves (not shown) are arranged in parallel along the circumferential direction on the outer peripheral surface of the adjusting portion 6. These grooves function as anti-slip when the adjusting unit 6 is rotated.

  As shown in FIG. 1, a set operation unit 8 is installed inside the cap-shaped member 4 so as to be movable in the axial direction.

  At the tip of the cap-shaped member 4, a ring-shaped rib 41 with which the tip of the setting operation unit 8 abuts is formed.

  Further, a head (position restricting means) 42 is formed at the base end of the cap-shaped member 4. When the set operation unit 8 is operated, the base end of the set operation unit 8 comes into contact with the head portion 42 to prevent the set operation unit 8 from moving in the base end direction.

  Further, elongated holes 43 are formed on the upper and lower sides of the cap-shaped member 4 in FIG.

  The set operation unit 8 includes a cylindrical set operation unit main body 80 that houses the coil spring 92.

  A ring-shaped rib 81 is formed at the tip of the set operation unit main body 80. A portion on the proximal end side of the rib 81 functions as a spring seat with which the distal end side of the coil spring 92 abuts.

  Further, on the upper side and the lower side in FIG. 1 of the base end portion of the set operation portion main body 80, a grip portion (finger portion) 82 inserted into the corresponding long hole 43 of the cap-like member 4 is formed. . The upper handle portion 82 in FIG. 1 protrudes from the long hole 43 to the upper side (outside) in FIG. 1, and the lower handle portion 82 in FIG. 1 protrudes from the long hole 43 to the lower side (outside) in FIG. Yes.

  Further, a ring-shaped spring receiving member 93 having a spring seat on the front end side is installed in the set operation unit 8 so as to be movable in the axial direction.

  When the puncture device 2 is not attached to the puncture apparatus 10, the coil spring 92 is inserted between the spring receiving member 93 and the rib 81 in a substantially unloaded state (natural length). The coil spring 92 is located on the proximal end side with respect to the coil spring 91. Further, the spring constant of the coil spring 92 is smaller than the spring constant of the coil spring 91.

  The spring receiving member 93 is locked by a pair of protrusions 521 and 521 in a state where the pair of protrusions 52 and 52 of the plunger 5 are inserted.

  The conditions such as the spring constants and axial lengths of the coil springs 91 and 92 are set so that the puncture can be performed reliably, that is, the puncture needle 22 is surely removed from the opening 211 of the casing 21 during the puncture. The puncture needle 22 is set so that it protrudes by a predetermined amount and then is securely accommodated in the casing 21.

  Next, the operation procedure and the operation of each part when the puncture device 2 is attached to the puncture apparatus 10 and puncture the surface of the living body will be described.

  [1] First, the unused puncture device 2 is attached to the distal end portion 36 of the puncture device 10. That is, until the flange 215 of the casing 21 abuts on the distal end 35 of the housing 3, the proximal end portion of the casing 21 is fitted into the distal end portion 36 of the housing 3, and the puncture portion is inserted into the distal end portion of the connecting portion 51 of the plunger 5. The proximal end portion of the needle 22 is inserted (see FIGS. 1 and 4A).

  Thereby, preparation (set) of puncture is completed. At this time, the flange 55 of the plunger 5 is in contact with the tip of the coil spring 91.

  [2] If necessary, the puncture depth to the surface of the living body by the puncture needle 22 (needle tip 231) is adjusted. That is, the puncture depth on the surface of the living body by the puncture needle 22 is set to a puncture depth corresponding to the individual difference of the blood sampler and the puncture site.

  As a reference for setting the puncture depth, for example, the puncture depth at which a minimum blood volume necessary for blood glucose measurement can be obtained can be used. Thereby, the pain at the time of puncture can be suppressed to the minimum necessary.

  When setting the puncture depth, the adjustment unit 6 is grasped with a finger, the adjustment unit 6 is rotated in the circumferential direction with respect to the housing 3, and a predetermined rib of the plurality of ribs 621 is moved to the index 33. To position.

  [3] After pressing the tip (opening 211) of the casing 21 of the puncture device 2 in the state shown in FIG. 1 to a predetermined portion, for example, a living body surface such as a fingertip, the operation button 71 of the puncture operation unit 7 is pressed (FIG. 1). 1) Push down in the middle.

  When the operation button 71 is pressed, the projection 711 presses the projection 532 of the locking portion 531, whereby the lock member 53 is elastically deformed and the locking portion 531 is displaced downward in FIG. The lock | rock with respect to the edge which faces the opening 32 of the protrusion 532 of 531 is cancelled | released.

  On the other hand, the puncture operation unit 7 is elastically deformed, and when the finger is released from the operation button 71, the puncture operation unit 7 that has been elastically deformed returns to its original shape due to its elastic force.

  When the locking portion 531 is unlocked, the compressed coil spring 91 is extended by its elastic force, the plunger 5 moves in the distal direction, and the needle tip 231 of the puncture needle 22 is moved from the opening 211 of the casing 21. Protrusions and punctures the living body surface.

  In addition, since the protrusion 56 of the plunger 5 abuts against the convex portion 611 of the puncture depth control plate 61, the movement of the plunger 5 in the distal direction is restricted, so that the puncture depth on the living body surface by the puncture needle 22 is , Adjusted to a constant (minimum value).

  Further, when the plunger 5 moves in the distal direction, the coil spring 91 and the flange 55 are separated in the middle of the movement, and the coil spring 92 is compressed. The plunger 5 is moved in the proximal direction with respect to the housing 3 by the coil spring 92. To be energized.

  In this case, as described above, since the spring constant of the coil spring 91 is larger than the spring constant of the coil spring 92, the plunger 5 moves to the distal end side against the elastic force (biasing force) of the coil spring 92, and the puncture needle 22 Can puncture the surface of the living body.

  Further, the coil spring 91 returns to the natural length after being separated from the flange 55, and does not bias the plunger 5 in either the distal direction or the proximal direction.

  After the puncture needle 22 punctures the living body surface, the compressed coil spring 92 is extended by its elastic force, the plunger 5 moves in the proximal direction, the puncture needle 22 comes out of the living body surface, and the puncture needle 22 is Then, it is stored (stored) in the casing 21 again. The stored puncture needle 22 engages with a protrusion (hub engaging portion) in which the outer peripheral surface of the large diameter portion 292 of the hub 29 is formed to protrude from the inner week surface of the casing 21. This prohibits the needle tip 231 of the puncture needle 22 from protruding from the opening 211 of the casing 21 after the puncture, thereby reliably preventing the user from unintentionally puncturing the fingertip or the like. .

  [4] After puncturing, the puncture tool 2 is separated from the surface of the living body, and blood on the puncture site is collected. The blood can be collected, for example, by supplying blood directly onto the test paper or sucking it through a thin tube and supplying it to the test paper.

  [5] Even if the operation button 71 is accidentally pressed before puncturing the living body surface, the puncture needle 22 can be reset. The handle portion 82 of the set operation portion 8 is held with a finger, and the set operation portion 8 is moved in the proximal direction against the housing 3 against the elastic force of the coil springs 91 and 92. Then, when the proximal end of the set operation portion 8 comes into contact with the head portion 42 of the housing 3, the finger is released from the grip portion 82 that has been gripped.

  In this case, first, the coil spring 92 with a small spring constant is compressed, then the coil spring 91 with a large spring constant is compressed, and the plunger 5 moves in the proximal direction as the coil spring 91 is compressed.

  When the base end of the setting operation portion 8 moves until it abuts against the head portion 42 of the housing 3, the protrusion 532 of the locking portion 531 of the locking member 53 of the plunger 5 is positioned on the right side of the opening 32 of the housing 3 and elastically deforms. The locked lock member 53 returns to its original shape due to its elastic force, the projection 532 is inserted into the opening 32 of the housing 3, and the projection 532 abuts (or faces) the projection 711 of the operation button 71 (see FIG. 1). ).

  Then, when the finger is released from the grip portion 82 that has been gripped, the protrusion 532 of the locking portion 531 comes into contact with the edge on the front end facing the opening 32 of the housing 3 as shown in FIG. The portion 531 is locked (locked) with respect to the housing 3, whereby the compressed state of the coil spring 91, that is, the state in which the plunger 5 is urged toward the distal end with respect to the housing 3 by the coil spring 91 is maintained.

  On the other hand, when the finger is released from the grip portion 82 that has been gripped, as shown in FIG. 1, the compressed (compressed) coil spring 92 is expanded by its elastic force, and the set operation portion 8 has its rib 81. Moves to the tip side until it contacts the rib 41 of the housing 3. The coil spring 92 returns to its natural length and does not urge the plunger 5 in either the distal direction or the proximal direction.

  In this state, preparation (set) for puncturing the surface of the living body is completed. Thus, the puncture device 10 can easily, quickly and reliably prepare for puncture on the surface of a living body.

  [6] After this (after use), the puncture device 2 is removed from the puncture device 10 and discarded using a removal tool 100 described later. The configuration of the removal instrument 100 and the method for removing the puncture device 2 (the method for using the puncture device set 1) will be described in detail later.

  Now, the puncture device 10 of the present embodiment is provided with cover means 11 that can cover the flange 215 of the puncture device 2 in a state where the puncture device 2 is mounted.

  As shown in FIG. 2, the cover means 11 includes an outer cylindrical portion 12 that is provided concentrically with the distal end portion 36 on the outer peripheral side of the distal end portion 36 of the housing body 30, and the outer cylindrical portion 12 and the distal end portion 36. A cylindrical cover member 13 inserted in the gap 120 therebetween and a coil spring (elastic body) 14 that urges the cover member 13 are provided.

  The outer cylinder portion 12 is fixed (fixed) to the distal end portion 36 via a ring-shaped wall portion 121 at the base portion. In this embodiment, the outer cylinder part 12 and the wall part 121 are integrally formed with the front-end | tip part 36 (housing main body 30).

  A gap 120 is formed between the outer cylinder portion 12 and the tip portion 36. A cover member 13 is inserted into the gap 120. Accordingly, the cover member 13 is disposed concentrically with the housing main body 30 (tip portion 36). Further, the cover member 13 is formed of a cylindrical member, and a first position on the distal end side (see FIG. 2A) along the axial direction of the housing body 30 (the distal end portion 36). It is slidable (displaceable) to a second position (see FIG. 2B) closer to the base end.

  The cover member 13 has a diameter-expanded portion 131 having an enlarged inner diameter at the tip. As shown in FIGS. 1 and 2 (a), when the puncture device 2 is mounted on the puncture device 10 (mounted state) and the cover member 13 is in the first position, the flange 215 of the puncture device 2 is expanded. It is housed (covered) in the diameter portion 131.

  Thus, when the cover member 13 is in the first position in the mounted state, the user is prohibited from hooking a nail or the like on the flange, making it difficult for the user to easily remove the puncture device 2. As a result, it is possible to prevent the user (patient or the like) from easily removing the puncture device 2 from the puncture device 10 at an unspecified location after using the puncture device 2. For this reason, the user does not inadvertently leave the used puncture device 2 unintentionally, and the surrounding puncture due to scattering of blood adhering to the puncture device 2 or the reuse of the puncture device 2 after use by mistake. It is possible to prevent inconvenience such as end.

  As shown in FIGS. 1 and 2A, the cover member 13 at the first position has a front end surface (pressing portion) 133 protruding from the front end side of the flange 215. As a result, the flange 215 of the puncture device 2 can be sufficiently covered, and the effects as described above become more remarkable.

  Further, the cover member 13 is formed with a reduced diameter portion 132 whose inner diameter is reduced at the base end portion thereof. On the other hand, a recess 361 is formed on the outer peripheral surface of the front end portion 36 of the housing body 30 in the middle of the axial direction. The reduced diameter portion 132 is slidably inserted into the recess 361.

  In a state where the cover member 13 is positioned on the most distal side (first position) with respect to the distal end portion 36 of the housing body 30, the distal end of the reduced diameter portion 132 abuts on the distal end (regulating portion) of the recess 361. This prevents the cover member 13 from being separated from the gap 120 (housing body 30). Moreover, the movement limit to the front-end | tip direction of the cover member 13 is prescribed | regulated.

  On the other hand, the cover member 13 moves in the proximal direction, and the distal end of the cover member 13 coincides with the distal end of the outer cylinder portion 12 or the proximal end of the reduced diameter portion 132 comes into contact with the proximal end of the recess 361, thereby covering the cover member 13. The member 13 is prevented from moving further in the proximal direction. At this time, the flange 215 of the puncture device 2 in the mounted state is exposed from the cover member 13 (see FIG. 2B). That is, the cover member 13 reaches the second position where the flange 215 is exposed.

  A coil spring 14 is provided in a compressed state on the proximal end side of the cover member 13 in the gap 120. Both ends of the coil spring 14 are in contact with the proximal end surface of the cover member 13 and the distal end surface of the wall portion 121, respectively. As a result, the coil spring 14 biases the cover member 13 in the distal direction, that is, in the direction in which the cover member 13 moves from the second position to the first position.

  Therefore, the cover member 13 positioned at the first position is urged in the distal direction by the coil spring 14, and the distal end of the reduced diameter portion 132 comes into contact with the distal end of the recess 361. Thereby, the cover member 13 is reliably held at the first position, and thus it is prevented from moving unintentionally from that position. That is, in the present embodiment, the coil spring 14, the wall 121, the reduced diameter portion 132, the recess 361, and the like constitute a holding unit that holds the cover member 13 in the first position. Thereby, as described above, the cover member 13 is securely held at the first position, and thus the user can be prevented from easily removing the puncture device 2 from the puncture apparatus 10.

  In addition, although it does not specifically limit as a constituent material of the cover member 13, For example, the constituent material which was mentioned by description about the hub 29 can be used.

  The puncture device 2 is removed from the puncture device 10 in the mounted state by the removal instrument 100 shown in FIGS.

  As shown in FIG. 3, the removal instrument 100 includes a container (apparatus body) 200 and a plurality (four in this embodiment) of engagement means 300 that engage with the flanges 215 of the puncture device 2. .

  The container 200 includes a box-shaped container main body 210 and a lid body 220 that closes the opening of the container main body 210.

  The lid body 220 has an opening 221 formed substantially at the center thereof. The opening 221 can be inserted with the puncture device 2 but is set to a size that can prevent the passage of the cover member 13.

  The shape of the opening 221 may be, for example, a square (or an ellipse) as shown, or a square such as a quadrangle or a hexagon.

  Further, the puncture device 2 removed from the puncture apparatus 10 can be stored in a space (storage space) 230 defined by the container main body 210 and the lid body 220. Thereby, the used puncture device 2 is safely discarded.

  The container 200 (the container main body 210 and the lid body 220) can be composed of, for example, various metal materials, various ceramic materials, etc. in addition to the resin materials mentioned as the constituent materials of the hub 29.

  Engagement means 300 is fixed on the inner side (back side) of lid 220. The engaging means 300 includes an engaging piece 310 that engages with the flange 215 of the puncture device 2 and an elastic member 320 that is formed integrally with the engaging piece 310.

  The elastic member 320 has a shape that is bent in a substantially U-shape when viewed from the side. The engagement piece 310 is disposed at one end and the other end is fixed (fixed) to the lid 220.

  Thus, the engaging means 300 is configured such that the engaging piece 310 is displaced by elastic deformation of the elastic member 320. Specifically, when the detachment tool 100 is viewed from the upper side (see FIG. 3A), the engagement means 300 is located from the position where the engagement piece 310 is exposed to the opening 221 and the central axis of the opening 221. It is configured to be displaceable from a distanced position.

  In a position where the four engagement pieces 310 are away from the central axis of the opening 221 (permitted position), the puncture tool 2 (particularly the flange 215) is allowed to pass through the opening 221. On the other hand, at the position where the four engagement pieces 310 are exposed from the opening 221 (engagement position), the flanges 215 that have passed through the inside of the engagement pieces 310 engage with the respective engagement pieces 310 (FIG. 5). (See (c) and (d)).

  Moreover, although the engagement piece 310 and the elastic member 320 may be comprised separately, Preferably, they are integrally formed like this embodiment.

  Further, the upper surface 311 of each engagement piece 310 is configured by a tapered surface (an inclined surface). Thus, when inserting the puncture device 2 into the opening 221, each engagement piece 310 is pressed outward, and the flange 215 of the puncture device 2 rides over the upper surface 311 while sliding on the upper surface 311. .

  Four such engagement means 300 are provided in the vicinity of the opening 221 along the circumferential direction thereof at substantially equal angular intervals (intervals of 90 degrees). By providing a plurality of engaging means 300, particularly at equiangular intervals, each engaging means 300 can be evenly engaged with the flange 215 of the puncture device 2 in the circumferential direction. Thereby, the puncture device 2 can be more reliably removed from the puncture device 10 as described later.

  Such engagement means 300 can be made of various metal materials in addition to the resin materials mentioned in the hub 29, for example.

Next, the usage method of the puncture apparatus set 1 is demonstrated.
[A] Puncture is performed as described above using the puncture apparatus with the puncture tool 2 attached. When this puncturing is performed, the cover member 13 is in the first position. Even after puncturing, the cover member 13 is in the first position. Thereby, it can prevent that a user removes the used puncture tool 2 carelessly.

  In addition, after using the puncture device 2, the user inserts the puncture device 10 with the puncture device 2 attached into the opening 221 (see FIG. 4A).

  [B] When the puncture device 10 is brought close to the removal instrument 100, the distal end surface 133 of the cover member 13 comes into contact with the edge of the opening 221 of the lid 220.

  Furthermore, when the puncture device 10 is moved closer to the removal instrument 100 (the lid body 220), the distal end surface 133 of the cover member 13 is pressed toward the proximal direction by the lid body 220. As a result, the cover member 13 moves in the proximal direction against the urging force of the coil spring 14. The flange 215 of the puncture device 2 is exposed from the cover member 13 (see FIG. 4B).

  [C] When the puncture device 10 is further moved closer to the removal instrument 100, the flange 215 of the puncture device 2 abuts on the engagement piece 310 of each engagement means 300 and presses the engagement piece 310 to open it. It is displaced toward the direction away from the axis of the part 221 (that is, the allowable position).

  Thereafter, the flange 215 climbs over each engagement piece 310, passes through the inside of each engagement piece 310, enters the interior (space 230) of the container body 210 rather than the engagement piece 310, and is positioned. At this time, the engagement piece 310 returns almost to its original position by the elastic force of the elastic member 320 and engages with the flange 215 (see FIG. 5C). Further, the cover member 13 is in the second position retracted from the first position.

  At this time, the distal end of the outer cylinder portion 12 comes into contact with the upper surface of the lid 220, and the puncture device 10 cannot be further approached to the removal instrument 100.

  [D] Thereafter, the puncture device 10 is detached from the instrument 100, that is, the puncture device 10 is pulled up in the proximal direction. At this time, the puncture device 2 is prohibited from moving in the proximal direction together with the puncture device 10 because the flange 215 is engaged with the engagement piece 310 of each engagement means 300.

  In this state, when the puncture device 10 is further pulled up in the proximal direction, only the puncture device 10 moves, and the puncture tool 2 is detached from the puncture device 10 (see FIG. 5D). The detached puncture device 2 falls and is stored in the container 2.

  With this configuration, the puncture device 2 can be removed by simply inserting the puncture device 2 into the opening 221, removing the puncture device 10 closer to the instrument 100, and then removing the puncture device 10 from the instrument 100. It can be reliably removed from the puncture device 10, and the disposal operation becomes extremely easy.

  Further, since the puncture device 2 after being removed is collected in the container 200 of the removal device 100, the puncture device 2 is not reused by mistake. Can eliminate the risk of virus infections.

  In the puncture device 2, the engaging portion that engages with the removal instrument 100 may be configured as a recess into which the engaging piece 310 of the engaging means 300 is inserted instead of the flange 215. Further, the engaging means 300 may be fixed to the upper surface (front surface) side of the lid body 220.

Further, the cover member 13 may be provided so as to be able to rotate instead of sliding.
Further, the puncture device 2 may have a configuration in which the casing 21 is omitted and a flange 215 (engagement portion) is formed on the hub 29.

  The puncture device and the puncture device set of the present invention have been described above with respect to the illustrated embodiment. However, the present invention is not limited to this, and the components constituting the puncture device and the puncture device set have the same functions. It can be replaced with any configuration that can be exhibited. Moreover, arbitrary components may be added.

  For example, the puncture device of the present invention is not limited to application to blood collection as in the above embodiment, and can be applied to, for example, collection of body fluid such as interstitial fluid.

It is a longitudinal cross-sectional view (figure which shows the state equipped with the puncture tool) which shows the puncture apparatus of this invention. It is a longitudinal cross-sectional view which expands and shows the front-end | tip part of the puncture device shown in FIG. It is a figure ((a) is a top view and (b) is a cross-sectional perspective view) which shows a removal instrument. It is a figure for demonstrating the usage method of the puncture apparatus set of this invention. It is a figure for demonstrating the usage method of the puncture apparatus set of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Puncture device set 10 Puncture device 2 Puncture tool 21 Casing 211 Opening (tip opening)
214 Opening (base opening)
215 Flange (convex part) (engagement part)
22 Puncture needle 23 Needle body 231 Needle tip 26 Inner circumference 29 Hub (needle hub)
291 Hub body 292 Large diameter part 293 Mounted part 3 Housing 30 Housing body 31 Hollow part 32 Opening 33 Indicator 34 Long hole 35 Tip 36 Tip part (attachment part)
361 Concavity 4 Cap-shaped member 41 Rib 42 Head (position regulating means)
43 long hole 5 plunger 51 connecting portion 52 protruding portion 521 protrusion 53 locking member 531 locking portion 532 protrusion 54, 55 flange 56 first protrusion 6 adjusting portion 61 puncture depth control plate (second protrusion)
611 Convex (spacer)
621 Rib 7 Puncture operation part 71 Operation button 711 Projection 8 Set operation part 80 Set operation part main body 81 Rib 82 Handle part (finger holding part)
91, 92 Coil spring 93 Spring receiving member 11 Cover means 12 Outer cylinder portion 120 Gap 121 Wall portion 13 Cover member 131 Expanded diameter portion 132 Reduced diameter portion 133 Tip surface (pressing portion)
14 Coil spring 100 Removal tool 200 Container (tool body)
210 Container Body 220 Lid 221 Opening 230 Space (Storage Space)
300 engaging means 310 engaging piece (instrument side engaging portion)
311 Upper surface 320 Elastic member

Claims (11)

A puncture device used by attaching a puncture device comprising a needle body having a sharp needle tip and an engaging portion provided on the outer peripheral side of the needle body,
A housing;
A mounting portion provided at a distal end portion of the housing, to which the puncture device is detachably mounted;
A first position that covers the engaging portion and a second position that exposes the engaging portion with the puncture device mounted on the mounting portion so as to be displaceable with respect to the mounting portion. A displaceable cover member,
The cover member is in the first position when puncturing with the needle tip is performed, and the engagement member is engaged with a removal tool for removing the puncture device mounted on the mounting portion from the mounting portion. A puncture device configured to be in the second position when the portions are engaged.   The puncture device according to claim 1, wherein the cover member has a distal end projecting toward the distal end side with respect to the engagement portion at the first position.   The said cover member has a press part pressed so that it may move from the said 1st position to the said 2nd position with the said removal instrument, when the said engaging part engages with the said removal instrument. Or the puncture apparatus of 2. The mounting portion has a cylindrical shape,
The cover member has a cylindrical shape concentrically arranged with respect to the mounting portion, and is displaced along the axial direction of the mounting portion when displaced from the first position to the second position. The puncture device according to any one of claims 1 to 3, wherein the puncture device moves.   The puncture device according to any one of claims 1 to 4, further comprising holding means for holding the cover member in the first position.   The holding means is provided in the mounting portion and an elastic body that biases the cover member in a direction in which the cover member is displaced from the second position to the first position, and limits the movement limit of the cover member. The puncture device according to claim 5, further comprising a restricting portion that restricts. The puncture device comprises a casing that accommodates the needle body so as to be movable along its longitudinal direction,
The puncture device according to any one of claims 1 to 6, wherein the engaging portion is provided on the outer peripheral portion of the casing so as to protrude in a flange shape. The detachment instrument has an opening through which the puncture device can be inserted, and a device body having a storage space communicating with the opening and storing the puncture device removed from the puncture device;
The puncture device according to any one of claims 1 to 7, further comprising an instrument side engagement portion that is provided in the vicinity of the opening and engages with the exposed engagement portion. The puncture device according to any one of claims 1 to 8,
The puncture device is detachably attached to the needle body having a sharp needle tip at the tip, and provided on the outer peripheral side of the needle body, and engages with the removal tool when removed from the puncture device. A puncture device set, comprising: a puncture device including an engaging portion that performs the puncture.   The puncture device includes a casing that accommodates the needle body so as to be movable along a longitudinal direction thereof, and is configured so that the needle tip does not protrude from the casing after puncturing by the needle tip. Item 10. The puncture device set according to item 9.   An instrument body having an opening through which the puncture device can be inserted, a storage space communicating with the opening and accommodating the puncture device removed from the puncture device, and provided near the opening, and the exposure The puncture device set according to claim 9 or 10, further comprising a detachment device including a device side engagement portion that engages with the engagement portion.

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