JP2018110670A - Huber needle extractor and its production method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable extracting a Huber needle from a CV port under the skin by operation of one hand while avoiding the needling to fingers due to rebound.SOLUTION: A needle extractor 101 disclosed has a movable part 5 for lifting a Huber needle 91. In a base part 1, a storage member 7 is set up for storing the Huber needle 91 lifted by the movable part 5 along with a wing 94. In the storage member 7, a guide member 9 for guiding the movable part 5 upward is fixed. The movable part 5 has a supporting member 11 for scooping and supporting a root portion 95 of the wing 94 across a tip side needle body 92 of the Huber needle 91 in the inside of the storage member 7. While pressing down a pressing member 15 being connected to the base part 1 with a palm or a thumb of one hand, a finger hooking member 13 being connected to the supporting member 11 is lifted up by the same hand finger, and thereby the Huber needle 91 is extracted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a CV port for injecting a drug solution into a CV port that is implanted under the skin of a patient for repeated administration of a drug such as an anticancer drug or repeated infusion of a drip solution. The present invention relates to a Huber needle extractor for pulling out from a port, and a method for manufacturing the same.

  The septum (ceiling partition) of the CV port through which the Huber needle is inserted and removed is configured by press-fitting hard silicone rubber on the annular edge so as to withstand many uses. In a typical Huber needle, the needle body is bent in an “L” shape, is a root side from the bent portion, and is a portion that is substantially horizontal along the patient's skin when used (hereinafter referred to as “base”). The end needle body ”is provided with a blade-like knob portion (referred to as a“ wing ”) that can be pivoted or bent up and down so that it can be picked up and removed with a finger. A needle hole for injecting a drug solution is a portion of the needle body that is distal to the bent portion and is used by being stabbed into the skin and being substantially perpendicular to the skin when used (hereinafter referred to as “tip needle body”). Is formed at the lower end. In order not to cut the septum, the needle hole is sideways, and the lower end of the distal needle body is somewhat bent toward the needle hole.

  Since the CV port and the Huber needle are configured in this way, when the Huber needle is removed from the CV port, a strong resistance force by the septum is applied to the needle. Therefore, doctors, nurses, etc., who administer medicinal solutions to patients, apply a considerable force with the fingers of the other hand while holding the skin with the fingers of one hand so that the patient's skin does not lift. It is necessary to pull out. When the needle is withdrawn, the strong resistance by the septum is instantly released, so that the hand holding the needle reflexively attempts to return (referred to as “rebound”). At this time, there is a risk of the needle sticking into the hand holding the skin.

  For example, Patent Documents 1 to 3 disclose instruments that address this problem and intend to easily pull out the Huber needle. The instrument disclosed in Patent Document 1 is an instrument integrated with a Huber needle, and a disk-shaped protection member is slidably attached to the Huber needle. By holding the protective member against the skin with the finger of one hand and picking the wing with the finger of the other hand, the Huber needle can be pulled out. Is housed in. Once the needle tip of the Huber needle is accommodated in the protective member, it is held in the accommodated state by the detent mechanism. This conventional device thereby attempts to prevent the tip of the Huber needle being pulled out from touching the finger.

  However, since this conventional instrument requires both hands for operation, there is a problem that the patient cannot operate it by himself. It is also expected in the future that the patient himself / herself implanted with a CV port subcutaneously administers a drug solution using a Huber needle at home. Furthermore, it has been pointed out that when the Huber needle is inserted into the septum of the CV port, the needle tip is difficult to visually recognize due to the disk-shaped protective member, and it is not easy to insert the needle at an accurate position.

  The instrument disclosed in Patent Document 2 has a structure in which a cylindrical body that houses a tip side needle body of a Huber needle is erected on a pedestal portion. By guiding the distal needle body of the Huber needle stabbed into the CV port into the cylindrical body through the slit formed in the pedestal, and then pulling the Huber needle upward while pressing the instrument downward The Huber needle can be withdrawn from the CV port. The tip side needle body of the Huber needle is held while being accommodated in the cylindrical body even during the extraction process and after the extraction. This prior art thereby tries to prevent the needle tip from touching the finger.

  However, even in this conventional instrument, by pushing the tubular body or pedestal part of the instrument downward with the finger of one hand, the wing is picked with the finger of the other hand while preventing the skin from lifting. It is necessary to pull out the Huber needle. That is, even in this conventional instrument, there is a problem that the patient cannot operate by himself because the operation requires both hands.

  The instrument disclosed in Patent Document 3 is configured such that a movable member that lifts a wing of a Huber needle while sandwiching a wing of a Huber needle is guided by a columnar body provided upright on a pedestal. In this conventional instrument, an overhanging portion for lifting with a finger is formed on the movable member. For this reason, by pushing the head of the columnar body downward with the thumb of one hand, the movable member can be pulled up by hanging the two fingers of the same hand on the overhang while preventing the skin from lifting. it can. That is, the operation of pulling out the Huber needle with the finger of one hand is possible.

  However, this conventional instrument requires the operation of both hands in the process of approaching the Huber needle and holding the wing between the movable members (see paragraph 0032). That is, even in this conventional instrument, there is a problem that the patient cannot operate by himself because the operation requires both hands.

Japanese Patent No. 5795798 JP 2002-345959 A Japanese Patent Application No. 2006-034952 (published by the applicant himself on the website)

  The present invention has been made in view of the above-described problems, and can remove a Huber needle from a CV port while avoiding needle sticking to a finger due to rebound and by one-hand operation. It is an object to provide a vessel and a method for manufacturing the same.

  In order to solve the above problems and achieve the above object, according to the first aspect of the present invention, the needle body is bent in an “L” shape between the proximal side and the distal side, and the proximal side An attachment member for giving a width is attached to the needle body, and a Huber needle to be used by pulling the tip side needle body into the CV port under the skin from above the skin is pulled out from the skin. A pedestal part, a main body part standing on the pedestal part, and a movable part for lifting the Huber needle. The main body portion includes a guide member that guides the movable portion upward, and a pressing member that pushes the pedestal portion downward with a palm or fingers. The movable part includes a support member that scoops up and supports the attachment member across the tip side needle body, and a finger hook member that is at a position lower than the pressing member and that lifts the support member with a finger. And have. Further, the pedestal portion has a gap that avoids interference with the distal needle body that is greeted by the support member, and a bottom surface that holds the CV port from above the skin when the Huber needle is lifted. Have.

  According to this configuration, the attachment member can be scooped up by the support member such that the pedestal is slid on the patient's skin and the distal needle body of the Huber needle is sandwiched between the support members. This operation can be performed with one hand. The CV port can be pushed from above the skin with the pedestal by pushing the holding member of the main body downward with the palm of the same hand or thumb, thereby preventing the skin from being lifted. The support member can be pulled up by hooking the finger on the finger-hanging member of the movable part. By this operation, the Huber needle is lifted and pulled out from the skin. Thus, even with the process of pulling out the Huber needle, the operation with one hand is possible. Moreover, since it is not necessary to hold down the CV port from above the skin with the other finger, it is possible to avoid needle stick to the finger due to rebound. Further, since the Huber needle is pulled upward, it can be easily pulled out without applying an excessive force to the Huber needle. In the “main body portion standing on the pedestal portion”, a guide member, a pressing member, or any other member constituting the main body portion is fixed to the pedestal portion, and other members are fixed to the pedestal portion via the member. The form which is made is also included.

  According to a second aspect of the present invention, there is provided a huber needle puller according to the first aspect, wherein the main body further includes a housing member for housing a Huber needle lifted by the movable part. ing. The support member is inside the housing member. Furthermore, the housing member has a gap at the lower end portion that allows the Huber needle to enter.

  According to this configuration, by sliding the pedestal portion on the patient's skin so that the Huber needle enters the gap at the lower end of the housing member, the support member holds the tip side needle body of the Huber needle. , Can scoop up attachments. By the operation of pulling up the support member, the Huber needle is lifted while being housed in the housing member and pulled out of the skin. The housing member serves to protect the needle tip of the Huber needle from fingers and the like by housing the Huber needle. After being pulled out, the Huber needle can be disposed of in a state where the needle tip is protected by the housing member by discarding the Huber needle together with the needle remover.

According to a third aspect of the present invention, there is provided a Huber needle puller according to the second aspect, wherein the housing member is a longitudinal slit connected to the gap, and is lifted by the movable part. It further has a longitudinal slit for avoiding interference with the chemical solution supply pipe connected to the proximal end needle body of the Huber needle.
This configuration prevents the housing member from interfering with the chemical supply pipe that rises together with the Huber needle when the Huber needle is lifted by the movable part, and the Huber needle is lifted while maintaining the posture before the lift. make it easier.

According to a fourth aspect of the present invention, there is provided a Huber needle extractor according to the second or third aspect, wherein the portion of the pedestal portion where the gap opens outwardly is a plan view. It protrudes outward from the housing member.
According to this configuration, it is possible to easily guide the distal end side needle body to the gap of the pedestal portion while visually recognizing the distal end side needle body of the Huber needle without being obstructed by the housing member.

According to a fifth aspect of the present invention, there is provided a huber needle puller according to any one of the second to fourth aspects, wherein at least a part of the housing member can visually recognize the inside. Made of transparent material.
According to this configuration, the internal Huber needle can be visually recognized through the transparent material of the housing member. Here, “transparent” is intended to include not only colorless and transparent but also colored and transparent so that the inside is visible.

  According to a sixth aspect of the present invention, there is provided a Huber needle puller according to any one of the second to fifth aspects, wherein the housing member includes one member and the other member divided in the horizontal direction. The pedestal portion, the other member, the guide member, and the pressing member are integrally connected, and the one member is formed in a flexible sheet shape on one of left and right ends of the other member. It connects together via a connection part, and it is stopped by the 1st detent mechanism on the other of the left-right end of the other member. Further, the movable part is integrally connected as a whole, and extends above the housing member from between the one member and the other member, and the guide member and the movable part have a second part. The detent mechanism prevents the guide member from being guided.

  According to this configuration, the pedestal portion, the housing member, the guide member, and the pressing member are integrally molded together with the sheet-like connecting portion, the movable member is integrally molded, and then the movable member is used as the guide member. Can be manufactured by a simple process of stopping by the detent mechanism, and then closing one member of the housing member toward the other member and stopping by the first detent mechanism.

According to a seventh aspect of the present invention, there is provided a huber needle puller according to any one of the first to sixth aspects, wherein the guide member and the movable portion are the huber needles pulled out. Sometimes, a third detent mechanism is provided to prevent the movable part from descending.
According to this configuration, even if a finger force is applied to return the movement of the movable portion after the Huber needle is pulled out, the Huber needle is held in the pulled-out state.

According to an eighth aspect of the present invention, there is provided a Huber needle extractor according to any one of the first to seventh aspects, wherein the gap in the pedestal portion supports the tip side needle body. The width is narrowed inward from the outer peripheral end of the pedestal so as to guide to the position sandwiched by the members.
According to this configuration, the tip side needle body of the Huber needle can be easily guided to a position sandwiched by the support member by sliding the pedestal portion on the patient's skin.

  According to a ninth aspect of the present invention, there is provided a Huber needle extractor according to the eighth aspect, wherein the upper edge portion of the gap of the pedestal portion has the tip side needle body to the support member. To be able to push up the attached member of the Huber needle deeply stabbed when greeted, a portion inclined so as to be higher as it is closer to the support member until it becomes the same height as the upper surface of the support member. Contains.

  According to this configuration, when the tip of the Huber needle is guided to the position sandwiched by the support member by sliding the pedestal on the patient's skin, the Huber needle is deeply stuck in the CV port Even so, the attachment member can be pushed up by the upper edge of the gap of the pedestal portion, so that the attachment member can be scooped up by the support member.

  According to a tenth aspect of the present invention, there is provided a Huber needle extractor according to any one of the first to ninth aspects, wherein the tip side needle body is connected to the support member in the gap of the base portion. It includes a saw-toothed overhanging portion that prevents the tip-side needle body from returning backward by hooking the tip-side needle body that returns when it is greeted.

  According to this configuration, when the pedestal is slid on the patient's skin, the tip of the Huber needle is guided to a position sandwiched by the support member, and the Huber needle extractor is reversed unintentionally. Even if it moves in the direction, the tip side needle body is hooked on the sawtooth-like overhanging portion of the gap, and movement in the reverse direction is prevented.

According to an eleventh aspect of the present invention, there is provided a Huber needle puller according to any one of the first to tenth aspects, wherein the movable portion is provided above the support member, and the support member Further, a flip-up preventing member for preventing the Huber needle supported by the spring from jumping up when being pulled out is further provided.
According to this configuration, the Huber needle supported by the support member can be prevented from jumping up when being pulled out.

  According to a twelfth aspect of the present invention, there is provided a Huber needle extractor according to any one of the first to eleventh aspects, wherein the movable portion includes the attachment member supported by the support member, A pressing member that presses toward the support member, the pressing member having a shape that does not prevent the accessory member from entering between the pressing member and the support member.

  According to this configuration, the Huber needle is stably supported by the support member by being sandwiched between the pressing member and the support member. Further, since the Huber needle is held between the pressing member and the support member even after being pulled out, the Huber needle is held by the support member even when there is no storage member. The needle can be discarded together with the needle remover. Further, when scooping up the attachment member by the support member, the attachment member is not prevented from entering between the pressing member and the support member.

  According to a thirteenth aspect of the present invention, there is provided a Huber needle extractor according to any one of the first to twelfth aspects, wherein the guide member and the movable part are a process in which the Huber needle is pulled up. Thus, a fourth detent mechanism for stopping the movable portion from descending is provided.

  According to this configuration, in the process in which the Huber needle is pulled up, it is possible to prevent the Huber needle from returning backwards even if a finger force is applied to return the movement of the movable part.

  According to a fourteenth aspect of the present invention, there is provided a method for producing a Huber needle puller according to the sixth aspect, wherein the one member of the housing member is the other member with the sheet-like connecting portion as an axis. A step of integrally molding the pedestal portion, the accommodating member, and the guide member together with the sheet-like connecting portion in a form that opens with respect to the member and is arranged next to the other member, and the movable portion are integrated. Molding the movable part, stopping the molded movable member on the molded guide member by the second detent mechanism, and stopping the movable part on the guide member; And closing the one member toward the other member and stopping the other member by the first detent mechanism.

  According to this configuration, the Huber needle extractor according to one aspect of the present invention can be easily manufactured.

  As described above, according to the present invention, it is possible to pull out a Huber needle from a CV port while avoiding needle stick to a finger due to rebound, and by one-hand operation, and a manufacture thereof. The method is realized.

It is a perspective view which shows the structure of the needle extractor for Huber needles by one embodiment of this invention. It is a perspective view which shows the structure of the base part and main-body part of the needle extractor of FIG. It is a perspective view which shows the structure of the movable part of the needle extractor of FIG. 1, and has shown the cross-sectional structure simultaneously by excising a part. It is side surface sectional drawing along the AA cutting line which shows a structure when a movable part exists in the lower end of a movable range about the needle extractor of FIG. It is side surface sectional drawing along the AA cutting line which shows a structure when a movable part exists in the upper end of a movable range about the needle extractor of FIG. It is a plane sectional view along a BB cutting line of the needle remover of FIG. It is a plane sectional view along a CC cutting line of the needle remover of FIG. It is side surface sectional drawing of the needle extractor for Huber needles by another embodiment of this invention. It is a perspective view of the movable part of the needle extractor for Huber needles of FIG. It is a perspective view of the base part and main-body part of the needle extractor for Huber needles by another embodiment of this invention. It is a perspective view of the needle extractor for Huber needles by another embodiment of this invention. It is a schematic explanatory drawing of operation | movement of the needle extractor for Huber needles of FIG.

  FIGS. 1-7 is a figure which shows the structure of the needle extractor for Huber needles (henceforth abbreviated as "needle remover" as appropriate) according to one embodiment of the present invention. In the following, the configuration, use method, and manufacturing method of the needle extractor 101 will be described with reference to FIGS. The brief description of these figures is as described above and will not be repeated.

  In the perspective view of the needle puller 101 in FIG. 1, the Huber needle 91 to be pulled out by the needle puller 101 is also shown at the same time. A CV port 99 is embedded under the skin 90 of the patient, and the distal needle body 92 of the Huber needle 91 is pierced into the CV port 99 through the skin 90. A wing 94 is attached to the proximal end side needle body 93 of the Huber needle 91, and a chemical solution supply pipe 97 for supplying a chemical solution is connected to the proximal end of the proximal end side needle body 93. The wing 94 is fixed to the proximal needle body 93 by the proximal needle body 93 passing through the base portion 95. The wing 94 can be rotated or bent around the root portion 95 and can be horizontally deployed or can be picked up with fingers and closed upward. The wing 94 functions as a pinch for pinching the Huber needle 91 into the CV port 99 or pulling it out from the CV port 99 by pinching with fingers.

  The needle extractor 101 is slid on the skin 90 to approach the Huber needle 91 from the tip side needle body 92 side (that is, toward the approaching direction 98), and lifts the base portion 95 of the wing 94. The Huber needle 91 is configured to be pulled out from the skin 90. Moreover, the needle puller 101 is configured so that operations from the approach to the Huber needle 91 to the completion of the pulling out of the Huber needle 91 can be performed with one hand. The needle puller 101 is further configured to protect the needle tip of the Huber needle 91 that is pulled out. For this purpose, the needle extractor 101 has a pedestal portion 1, a main body portion 3, and a movable portion 5. And the main-body part 3 is fixed to the accommodating member 7 fixed on the base part 1, the accommodating member 7, the guide member 9 which guides the movable part 5 to an up-down direction, and the base part 1 for pressing down A holding member 15 is provided. The pressing member 15 is fixed to the top of the guide member 9 as an example. The movable portion 5 includes a support member 11 that scoops up and supports the base portion 95 of the wing 94 of the Huber needle 91 and a finger hooking member 13 that lifts the support member 11. The Huber needle 91 is lifted by the support member 11 in a state of being housed in the housing member 7 including the wing 94 and pulled out from the skin 90. The housing member 7 serves to protect the needle tip of the Huber needle 91 to be pulled out from contact with a finger or the like.

  In the present invention, the directions “up” and “down” are, as illustrated in FIG. 1, a Huber needle extractor (example shown) on the skin 90 of the patient into which the Huber needle 91 is inserted. Then, the posture when using the needle remover 101) is used as a reference. Furthermore, an approach direction 98 that is a direction in which the needle extractor 101 is brought close to the Huber needle 91 in order to pull out the Huber needle 91 is referred to as “front” of the needle extractor 101.

  The pedestal portion 1 is a member that supports the main body portion 3, and is placed on the skin 90 and presses the CV port 99 from above the skin 90 when the Huber needle 91 is pulled out using the needle puller 101. Therefore, it also serves to prevent the skin 90 from lifting. As shown in the perspective views of the pedestal portion 1 and the main body portion 3 in FIG. 2, the pedestal portion 1 is formed with a gap 17 that opens wide toward the front and narrows toward the rear. The gap 17 plays a role of guiding the tip side needle body 92 of the Huber needle 91 when the needle extractor 101 is brought close to the Huber needle 91. The back side of the gap 17 is narrowed like a slit.

  The support member 11 is placed on the pedestal portion 1 when the support member 11 is in the standby position or the initial position, which is the lower end position in the movable range. A groove 18 is formed on the upper surface of the pedestal portion 1, and the support member 11 at the standby position is placed in the groove 18. Both upper surfaces are flush with each other so that the upper surface of the support member 11 is positioned on the extension of the upper surface of the pedestal portion 1.

  The structure of the support member 11 is particularly clearly shown in the perspective view of the movable part 5 in FIG. The support member 11 has a fork shape in which a slit 19 extending rearward from the front end is formed. The slit 19 is formed so as to overlap the slit on the back side of the gap 17 of the pedestal portion 1. The width of the slit 19 is preferably set to be slightly larger than the diameter of the tip side needle body 92 of the Huber needle 91 and sufficiently smaller than the width of the root portion 95 of the wing 94. By moving the needle extractor 101 along the approach direction 98 so as to approach the Huber needle 91, the tip side needle body 92 of the Huber needle 91 fits in the back of the slit 19. At this time, the fork-like support member 11 is inserted between the root portion 95 of the wing 94 and the skin 90, as clearly shown in the side sectional view of the needle extractor 101 of FIG. . As a result, the Huber needle 91 is ready for lifting. As shown in the side sectional view of the needle remover 101 in FIG. 5, when the finger hooking member 13 is pulled up, the support member 11 holds the base portion 95 of the wing 94 while sandwiching the tip side needle body 92 of the Huber needle 91. Lift up. The positional relationship between the Huber needle 91 and the support member 11 when the Huber needle 91 is lifted is clearly shown in the plan sectional view of the needle extractor 101 in FIG. FIG. 6 also clearly shows how the Huber needle 91 is lifted in a state of being accommodated in the accommodating member 7 including the wing 94.

  As shown in FIGS. 1 to 5, the upper surface of the front portion of the support member 11 is inclined so as to descend toward the front. The inclined surface of the support member 11 continues to the upper surface of the front end portion of the pedestal portion 1 located in front of the support member 11 as it is. In other words, the upper surface of the front end portion of the pedestal portion 1 is inclined so as to become higher toward the rear, and the inclined surface continues directly to the upper surface of the front portion of the support member 11 located behind the upper surface. . In the illustrated example, the upper surface of the entire front end portion of the pedestal portion 1 is inclined, but only the upper edge portion of the gap 17 among the front end portions of the pedestal portion 1 may be similarly inclined. Furthermore, an inclined surface may be formed only in a region of the front end portion of the pedestal portion 1 that is retracted rearward from the front end to some extent. As described above, since the inclined surface is formed on the pedestal portion 1 and the support member 11, even if the Huber needle 91 is deeply stuck in the CV port 99, the needle extractor 101 is brought close to the Huber needle 91. Thus, the base portion 95 of the wing 94 can be pushed up by the inclined surface. Thereby, the support member 11 can be easily inserted between the base portion 95 of the wing 94 and the skin 90.

  As clearly shown in FIGS. 1 and 2, a housing member 7 is erected on the pedestal portion 1. The accommodating member 7 is in a container shape and is divided into a front half part 21 and a rear half part 23. In FIG. 1, the front half 21 is represented as if it is a transparent member so that the internal structure of the housing member 7 can be seen, and the same is also expressed in FIG. 2. The accommodating member 7 is directly fixed to the pedestal portion 1 by the latter half portion 23. The guide member 9 is directly fixed to the rear half 23 of the housing member 7. The front half 21 of the housing member 7 is formed to have a gap 25 at the lower end. In the illustrated example, the gap 25 is formed between the housing member 7 and the pedestal portion 1. The gap 25 is set to a size that allows the wing 94 of the Huber needle 91 to pass through in a horizontally deployed form. Most of the upper end of the housing member 7 is closed so that the Huber needle 91 accommodated does not jump out from the upper end.

  The front half 21 of the housing member 7 is further formed with a slit 27 that opens at the lower end and extends in the vertical direction to the vicinity of the upper end at the center of the front. The width of the slit 27 is preferably set slightly larger than the diameter of the chemical liquid supply tube 97 of the Huber needle 91. The slit 27 is provided to prevent the chemical liquid supply tube 97 from interfering with the housing member 7 when the Huber needle 91 is lifted in the state of being housed in the housing member 7. The slit 27 is formed so that the width thereof is wide at the opening at the lower end and becomes narrower toward the upper side so that the chemical solution supply pipe 97 that rises together with the Huber needle 91 is easily guided into the slit 27. As an example, the housing member 7 includes the gap 25 and the slit 27 so that fingers cannot easily enter deep inside.

  2 and 6, the front half portion 21 of the housing member 7 has a flexible sheet-like connection portion 29 at the right end of the rear half portion 23 at the right end thereof. It is connected to. Thereby, the front half part 21 can be opened and closed with respect to the rear half part 23 around the sheet-like connection part 29 as an axis. From the left end of the front half 21, a locking arm 31 extends rearward. A hook-shaped protrusion 33 is formed at the tip of the locking arm 31. When the front half 21 is closed with respect to the rear half 23, the projection 33 is locked in a locking hole 35 formed in the wall of the rear half 23, whereby the front half 21 is held closed. The That is, the locking arm portion 31 and the locking hole 35 constitute a ratchet that is a kind of detent mechanism. The needle puller 101 is shipped with the front half 21 closed.

  As clearly shown in FIG. 3, the movable portion 5 includes a columnar member 37, a finger hook member 13, and a flip-up preventing member 41 in addition to the support member 11. The columnar member 37 is a columnar body having a substantially “U” -shaped cross section (substantially “U” -shaped) in the most part along the longitudinal direction, and the front side wall 56 is partially opened. FIG. 3 shows the cross-sectional shape of the columnar member 37 by cutting away a part of the columnar member 37 in order to clearly show that the cross-sectional shape of the columnar member 37 is substantially “U” -shaped. The cross-sectional shape of the substantially “U” -shaped columnar member 37 is also shown in FIG. The columnar member 37 is a member that is slidably guided by the guide member 9. The lower end of the columnar member 37 is connected to the support member 11. The finger hanging member 13 is a member for hanging the finger and pulling up the movable portion 5. The finger hanging member 13 is connected to the head of the columnar member 37 and protrudes left and right. The flip-up preventing member 41 is a member that prevents the Huber needle 91 lifted by the support member 11 from jumping upward at the moment when it is pulled out from the CV port 99. The flip-up preventing member 41 is connected to the columnar member 37 at a position above the support member 11 and has a horizontal plate shape as an example. In the illustrated example, the columnar member 37 also has two triangular plate-like reinforcing members that reinforce the plate-like member.

  The columnar member 37 having a substantially “U” -shaped cross section in most parts is slidable with respect to the front side wall 55 and the left and right side walls of the columnar guide member 47 constituting the guide member 9 shown in FIG. It is attached to the member 47. As shown in FIG. 3, a pair of projecting portions 43 projecting rearward are provided in the vicinity of the upper end of the columnar member 37. As shown in the cross-sectional plan view of the needle extractor 101 in FIG. 7, a hook-shaped protrusion 45 is formed on the inner side of the distal end portions of the pair of protruding portions 43. When the columnar member 37 is attached to the columnar guide member 47, the protrusion 45 is locked to the back surface of the columnar guide member 47. Thereby, the columnar member 37 is restrained so as not to be detached from the guide member 9. That is, the protrusion 43 and the columnar guide member 47 constitute a ratchet that is a kind of detent mechanism.

  As clearly shown in FIG. 2, the front of the guide member 9 is not covered by the rear half 23 of the housing member 7 and is open if there is no front half 21. For this reason, in the manufacturing process of the needle puller 101, the movable part 5 can be attached to the guide member 9 in a state where the front half 21 is opened, and then the needle half 101 is closed by closing the front half 21. Can be completed.

  As shown in FIG. 2, the guide member 9 protrudes forward from the inner surface of the rear half part 23 in addition to the columnar guide member 47 extending through the ceiling and extending upward from the inner side of the rear half part 23 of the housing member 7. Two plate-like guide members 49 are provided. As with the columnar member 37 of the movable portion 5, the columnar guide member 47 has a substantially “U” -shaped cross section at the most part along the vertical direction. Its cross-sectional shape is clearly shown in FIG. The protruding portion 43 of the columnar member 37 of the movable portion 5 is engaged with a portion of the columnar guide member 47 having a substantially “U” cross section. Similarly to the columnar guide member 47, the plate-shaped guide member 49 plays a role of guiding the columnar member 37 of the movable portion 5.

  As shown in FIG. 1, the guide member 9 is further fixed to the top with a flat pressing member 15 for pressing with the palm or fingers. By lifting the support member 11 by placing a finger on the finger-holding member 13 of the movable portion 5 and lifting the Huber needle 91, the skin 90 is formed on the pedestal portion 1 by pressing the pressing member 15 with the thumb or palm of the same hand. The CV port 99 can be pushed from above. Thereby, it is possible to avoid the skin 90 from being lifted when the Huber needle 91 is lifted.

  As clearly shown in FIGS. 2 and 4, the pressing member 15 at the top of the guide member 9 is connected to a protruding portion 53 that protrudes downward from the lower surface thereof. The protruding portion 53 is formed so as to be aligned with the front side wall 55 of the columnar guide member 47. On the front surface of the distal end portion of the protruding portion 53, a horizontally long protrusion 57 that protrudes in a bowl shape in cross section is formed. On the other hand, as clearly shown in FIGS. 4 and 5, the columnar member 37 of the movable portion 5 is formed with a horizontally long protrusion 65 that protrudes in a cross-sectional shape from the back surface of the front side wall 56 in the vicinity of the top. Immediately below, a retreating portion 59 whose back surface retreats with a step is continued. When the movable part 5 is pulled upward, the front side wall 56 immediately adjacent to the bottom of the top of the columnar member 37 pushes and bends the protrusion 53 to the rear, thereby allowing the protrusion 57 to escape backward. As shown in FIG. 5, when the movable portion 5 is pulled up sufficiently high, the protrusion 57 is further moved backward by the protrusion 65, and then returns to the front and engages with the retracted portion 59. Thereby, the movable part 5 can no longer return downward. That is, the protrusion 53, the protrusion 65, and the retreat part 59 constitute a ratchet that is a kind of detent mechanism.

  As clearly shown in FIGS. 2 and 4, the front side wall 55 of the columnar guide member 47 has a horizontally long protrusion 61 protruding in a round shape in a circular arc shape from the front surface and a horizontally long shape protruding in a cross-sectional shape. The projection 63 is formed. As can be understood from FIG. 4, when the support member 11 is in a standby state, that is, when the movable part 5 is in the lowest initial position, the protrusion 65 of the movable part 5 is in a position immediately adjacent to the protrusion 61. Thereby, it is possible to prevent the movable portion 5 from moving from the initial position before the user starts using the needle puller 101, for example, in the course of merchandise conveyance. By pulling up the finger-holding member 13 with a finger, the projection 65 can get over the projection 61 and raise the movable portion 5. When the protrusion 65 gets over the protrusion 61, a click feeling is transmitted to the fingers. The user can thereby confirm by tactile sense that the lifting of the Huber needle 91 has started.

  The multiple rows of protrusions 63 are arranged between the protrusions 61 and the protrusions 57. Thereby, even when a finger force is applied so as to push down the movable part 5 in the middle of raising the movable part 5, it is possible to prevent the movable part 5 from returning and descending. That is, the protrusion 63 and the protrusion 65 constitute a ratchet that is a kind of detent mechanism. In addition, since the click feeling is transmitted to the finger in the process of raising the movable portion 5, the user can confirm by tactile sense that the lifting of the Huber needle 91 is progressing.

  As clearly shown in FIGS. 6 and 7, the front end portion of the pedestal portion 1 where the gap 17 opens is formed so as to protrude forward from the housing member 7 in plan view. Thereby, the user can easily welcome the distal end side needle body 92 into the gap 17 while visually recognizing the distal end side needle body 92 of the Huber needle 91 without being obstructed by the housing member 7. In addition, as shown in FIG. 6, a sawtooth-like protruding portion 67 is formed in the gap 17 of the pedestal portion 1. The overhanging portion 67 moves the needle extractor 101 on the skin 90 to reverse the movement of the needle extractor 101 in the process of guiding the distal needle body 92 of the Huber needle 91 to the support member 11. Even if it exists, it plays the role which prevents the further reverse return by hooking the tip side needle body 92 which returns.

(how to use)
Next, how to use the needle remover 101 will be described. In order to pull out the Huber needle 91 pierced in the CV port 99 through the skin 90 using the needle extractor 101, first, the main body 3 such as the housing member 7 is grasped with one hand, as shown in FIG. The opening of the gap 17 that opens to the front end of the pedestal 1 is made to approach from the tip side needle body 92 side of the Huber needle 91. As a result, the Huber needle 91 including the developed wing 94 passes through the gap 25 at the lower end of the storage member 7 and is stored in the storage member 7. At the same time, the distal needle body 92 of the Huber needle 91 is introduced into the slit 19 of the support member 11 at the initial position. At this time, as shown in FIG. 4, the fork-shaped support member 11 is inserted between the root portion 95 of the wing 94 of the Huber needle 91 and the skin 90. The above operation can be performed with one hand.

  Next, the finger of the same hand is put on the finger-holding member 13 of the movable part 5 and the pressing member 15 on the top of the guide member 9 is pressed with the thumb or palm of the same hand, so that the pedestal 1 can be used from above the skin 90. While holding down the CV port 99, the support member 11 on which the base portion 95 of the wing 94 of the Huber needle 91 is placed can be pulled up. Thereby, the Huber needle 91 can be lifted while preventing the skin 90 from being lifted. As shown in FIG. 6, the Huber needle 91 is pulled up while being accommodated in the accommodating member 7 including the wing 94. The chemical liquid supply pipe 97 of the Huber needle 91 is prevented from interfering with the housing member 7 by the slit 27 formed in the housing member 7. Therefore, the Huber needle 91 is lifted and pulled out of the skin 90 while maintaining the posture shown in FIG.

  As shown in FIG. 5, when the movable portion 5 is pulled up until the top of the columnar member 37 of the movable portion 5 contacts the pressing member 15 on the top of the guide member 9, the protrusion 57 of the columnar guide member 47 is movable. By engaging with the retreating portion 59 of the columnar member 37 of the portion 5, the reverse movement of the movable portion 5 is stopped. The needle tip of the pulled Huber needle 91 is protected by the housing member 7. In this state, the Huber needle 91 is discarded together with the needle remover 101. As is clear from the above description, the operation with one hand is possible from the approach to the Huber needle 91 to the completion of the extraction.

  As shown in FIG. 1, since the upper end of the housing member 7 is substantially closed, the pulled up Huber needle 91 does not escape from the upper end to the outside even when the posture of the needle remover 101 is changed. It is possible to dispose of it while being housed in the container. In particular, since the support member 11 is near the upper end of the housing member 7 after the Huber needle 91 is pulled out, the Huber needle 91 is pushed into a narrow space between the support member 11 and the ceiling portion of the housing member 7. Thus, it does not fall off the support member 11. Even if the upper end of the housing member 7 is not closed, some member (for example, a beam spanned over the upper end, a lattice covering the upper end, etc.) that prevents the Huber needle 91 from popping out is provided at the upper end of the housing member 7. If it exists, the same effect is acquired. Even when the upper end of the storage member 7 is opened, the Huber needle 91 is discarded in the state of being stored in the storage member 7 by discarding the needle remover 101 while maintaining the normal posture. Is possible.

(Production method)
Next, the manufacturing process of the needle puller 101 will be described. In order to easily manufacture the needle puller 101, first, as shown in FIG. 2, the front half 21 of the housing member 7 opens with respect to the rear half 23 and is arranged side by side with the rear half 23. The part 1, the housing member 7, and the guide member 9 are integrally molded by a resin molding method using a mold. The front half part 21 and the rear half part 23 of the housing member 7 are connected by a sheet-like connecting part 29, and this sheet-like connecting part 29 is also molded at the same time. This molding can be performed with only a pair of molds. Further, the molding of the front half 21 is preferably performed with a transparent resin. In parallel with or before or after this molding, the movable portion 5 shown in FIG. 2 is integrally molded by a resin molding method using a mold. This molding can also be performed with only a pair of molds.

  Next, the movable part 5 is attached to the guide member 9 with the front half 21 of the housing member 7 opened. By the action of the columnar guide member 47 and the projecting portion 43 constituting the ratchet, the movable portion 5 can be easily stopped on the guide member 9 simply by pressing against the guide member 9 from the front. The movable part 5 is set to an initial position. After attaching the movable part 5 to the guide member 9, the front half 21 of the housing member 7 is closed with respect to the rear half 23. The front half portion 21 is simply closed by the function of the locking arm portion 31 and the locking hole 35 constituting the ratchet simply by rotating in the closing direction and pushing toward the rear half portion 23, and then closed. State is maintained. Thereby, the needle remover 101 can be used.

(Other embodiments)
(1) FIG. 8 is a side cross-sectional view of a Huber needle extractor according to another embodiment of the present invention. FIG. 9 is a perspective view of a movable portion of the Huber needle extractor shown in FIG. The movable portion 85 of the needle puller 102 is provided with a pressing member 69 on the movable portion 5 of the needle puller 101. The pressing member 69 is a member that presses the Huber needle 91 toward the support member 11. In the illustrated example, the pressing member 69 is a leaf spring that presses the support member 11 with an elastic restoring force. The pressing member 69 brings the root portion 95 so as not to prevent the support member 11 from being inserted between the root portion 95 of the wing 94 and the skin 90 by causing the needle remover 102 to approach the Huber needle 91. It is formed into a shape. The material of the leaf spring is, for example, metal, plastic, rubber or the like.

  Instead of the leaf spring, the pressing member 69 may use another elastic member having a shape that does not prevent the base portion 95 of the wing 94 from entering between the pressing member 69 and the support member 11. Moreover, the press member 69 can also take the form which is not an elastic member itself. For example, the pressing member 69 is supported by the columnar member 37 of the movable portion 85 so that the front end portion thereof is freely rotatable, and the pressing member 69 is pressed against the supporting member 11 by, for example, a helical spring (for example, the shape of the pressing member 69 shown in the figure). Eggplant).

  The Huber needle 91 is sandwiched between the pressing member 69 and the support member 11 and is stably supported by the support member 11 by being pressed. In the illustrated example, the pressing member 69 is attached to the columnar member 37 via the spring-up preventing member 41. Therefore, it is possible to suppress the jumping of the Huber needle 91 at the moment of being pulled out from the CV port 99 by the pressing member 69, and the degree of the jumping up can be suppressed within a certain limit by the columnar member 37.

  (2) FIG. 10 is a perspective view of a pedestal portion and a main body portion of a needle extractor for Huber needle according to still another embodiment of the present invention. The main body 83 of the needle extractor 103 does not have the housing member 7, and the guide member 89 stands directly on the pedestal 81. The pedestal portion 81 is set to have a narrow left and right width compared to the pedestal portion 1 of the needle extractor 101 (see FIG. 1). As an example, the movable member 85 shown in FIG. 9 is attached to the guide member 89. Thus, it is also possible to constitute the needle puller 103 that does not use the housing member 7. The pulled-up Huber needle 91 is stably supported by the support member 11 by the pressing member 69. Further, the pulled Huber needle 91 can be discarded together with the needle extractor 103 while being held on the support member 11 by the pressing member 69. Since the width of the pedestal portion 81 is narrow and the housing member 7 is not provided, the volume of the needle puller 103 is compact and is not particularly bulky when it is discarded, which is convenient. The guide member 89 may be indirectly fixed to the pedestal portion 81 via some other member.

  (3) FIG. 11 is a perspective view of a needle extractor for Huber needles according to still another embodiment of the present invention. In the needle puller 104, a storage member 87 is further provided in the needle puller 103 (see FIGS. 9 and 10). The housing member 87 is, for example, a cylindrical body having a substantially rectangular cross section with an open upper end and a lower end, and the back wall is attached to the guide member 89 by, for example, adhesion or a ratchet mechanism (not shown). A slit 27 is formed in the front wall of the housing member 87 in the same manner as the housing member 7 of the needle extractor 101. Further, a gap 25 is formed at the lower end of the housing member 87 so that the Huber needle 91 can enter.

  FIG. 12 is a schematic explanatory diagram of the operation of the needle remover 104. FIG. 12A shows a state in which the hub portion 91 of the wing 94 is sandwiched between the support member 11 and the pressing member 69 at the standby position when the Huber needle 91 enters the gap 25. The horizontally extended wing 94 protrudes outward from the left and right sides of the narrow accommodating member 87. FIG. 12B shows a state in which the movable portion 85 is pulled up thereafter. In FIG. 12, it is assumed that the wing 94 of the Huber needle 91 is made of a flexible material that can be bent. As the support member 11 is pulled up, the wing 94 bends downward to be housed in the housing member 87 and ascend. Even if the width of the accommodating member 87 is narrower than the width of the wing 94, the Huber needle 91 is stably lifted as shown in the drawing. The housing member 87 functions to protect the needle tip of the Huber needle 91 that is pulled up, similarly to the housing member 7 (see FIGS. 1 and 6). When the extraction of the Huber needle 91 is completed, the Huber needle 91 can be discarded together with the needle extractor 104 with the needle tip protected.

  The Huber needle 91 configured so that the wing 94 can be rotated not only in the upper and horizontal directions but also in the lower direction can be pulled up by the needle remover 104. The left and right widths of the support member 11 can be appropriately selected according to the interval between the rotation axes of the left and right wings 94. Further, in the needle puller 101 in which the pressing member 69 is not provided, even when the accommodating member 87 whose width on the left and right is narrower than the width of the wing 94 is used, the posture of the Huber needle 91 is stabilized and the Huber The needle 91 can be pulled up.

  Furthermore, instead of the wing 94, the Huber needle 91 in which any attached member is attached to the proximal needle body 93 can be pulled up by the needle removers 101, 102, 103 and 104. The attachment member is sufficient if it allows the proximal needle body 93 to have a width like the base portion 95 of the wing 94. In this case, in the needle removers 101, 102, and 104 having the housing members 7 and 87, the housing members 7 and 87 can further reduce the left and right widths compared to the housing member 87 illustrated in FIGS. it can. Thereby, the needle removers 101, 102, 104 can be made more compact.

  Furthermore, the form which remove | excluded the accommodating member 7 from the needle extractor 101, or the form which excluded the press member 69 from the needle extractor 103 (namely, the form which attached the movable part 5 of FIG. 3 to the guide member 89 of FIG. 10). It is also possible to implement. Such a configuration is also effective if it is not necessary to discard the Huber needle 91 together with the needle extractors 101 and 103 while being held by the needle extractors 101 and 103 after the withdrawal. Moreover, the needle pullers 101 and 103 can be configured more simply.

  (4) In the needle pullers 101 and 102, the rear half 23 of the housing member 7 is fixed to the pedestal 1 and the guide member 9 is fixed to the rear half 23. On the other hand, the guide member 9 can be configured to be fixed to the pedestal portion 1, and at the same time, the accommodating member 7 (for example, the rear half portion 23) can be configured to be fixed to the guide member 9. Or it is also possible to comprise so that both the guide member 9 and the accommodating member 7 (for example, the latter half part 23) may be fixed to the base part 1 separately. In the needle pullers 101 and 102, the pressing member 15 is fixed to the top of the guide member 9, but can be fixed to the housing member 7 or the pedestal portion 1 instead of the guide member 9. . The positional relationship between the pressing member 15 and the finger hooking member 13 of the guide member 9 is such that the pressing member 15 is provided at a higher position than the finger hooking member 13 in order to enable operation with both hands sandwiched therebetween. It ’s enough.

  (5) The accommodating member 7 of the needle extractors 101 and 102 and the accommodating member 87 of the needle extractor 104 may be made of a transparent material. Accordingly, the user can easily operate the needle pullers 101, 102, and 104 while visually recognizing the Huber needle 91 inside the housing members 7 and 87. Moreover, it is also possible to make only one part transparent in the range which can visually recognize the Huber needle | hook 91 accommodated inside among the accommodating members 7 and 87. FIG. For example, only the front half 21 of the housing member 7 may be made of a transparent material. The transparent may be colored and transparent so that the inside can be visually recognized.

  (6) Regarding the needle puller 101, the method of manufacturing the pedestal 1, the housing member 7, the guide member 9, and the pressing member 15 by resin integral molding has been described. On the other hand, it is naturally possible to mold them as two or more members and then assemble them. For example, when only the front half 21 of the housing member 7 is made of a transparent material, the front half 21 can be molded separately from other members. In order to attach the front half 21 to the rear half 23, for example, the locking arm 31 is formed on both left and right ends of the front half 21, and the locking holes 35 are formed on the left and right walls of the rear half. Then, the locking arm portion 31 can be locked in the locking hole 35.

  DESCRIPTION OF SYMBOLS 1 Base part, 3 Main-body part, 5 Movable part, 7 Storage member, 9 Guide member, 11 Support member, 13 Finger hooking member, 15 Pressing member, 17 Space | gap, 18 Groove, 19 Slit, 21 First half part, 23 Late part, 25 Gap (clearance), 27 slit, 29 sheet-like connecting part, 31 locking arm part, 33 protrusion, 35 locking hole, 37 columnar member, 41 spring-up preventing member, 43 protruding part, 45 protrusion, 47 columnar guide Member, 49 plate-shaped guide member, 53 projecting portion, 55, 56 front side wall (57), 57 projection, 59 retracted portion, 61, 63, 65 projection, 67 overhang portion, 69 pressing member, 81 pedestal portion, 83 Body part, 85 movable part, 87 housing member, 89 guide member, 90 skin, 91 Huber needle, 92 tip Gawaharitai, 93 proximal side needle body 94 wings, 95 base portion (accessory members), 97 chemical supply pipe, 98 approaching direction, 99 CV port, needle removal device for 101 Huber needle.

Claims (14)

The needle body is bent in an “L” shape between the proximal end side and the distal end side, and an attachment member for imparting a width is attached to the proximal end side needle body. A Huber needle puller for pulling a Huber needle used by piercing a CV port under the skin from the skin,
A pedestal, a main body erected on the pedestal, and a movable part that lifts the Huber needle,
The main body is
A guide member for guiding the movable part upward;
A pressing member for pressing the pedestal portion downward with a palm or fingers,
The movable part is
A support member that scoops up and supports the attached member across the tip side needle body,
A finger hooking member for lowering the support member at a position lower than the pressing member;
The pedestal portion has a gap that avoids interference with the distal needle body that is greeted by the support member, and has a bottom surface that presses the CV port from above the skin when the Huber needle is lifted. A needle remover for Huber needles. The main body is
An accommodating member for accommodating a Huber needle lifted by the movable part;
The support member is inside the housing member;
The needle holder for a Huber needle according to claim 2, wherein the housing member has a gap at a lower end portion that allows the Huber needle to enter. The housing member is
A longitudinal slit connected to the gap, further comprising a longitudinal slit for avoiding interference with the chemical liquid supply pipe connected to the proximal end needle body of the Huber needle lifted by the movable portion; The Huber needle extractor according to claim 2.   4. The Huber needle extractor according to claim 2, wherein a portion of the base portion where the gap opens outwardly protrudes outward from the housing member in a plan view.   The Huber needle extractor according to any one of claims 2 to 4, wherein at least a part of the housing member is made of a transparent material that allows the inside to be visually recognized. The housing member has one member divided in the horizontal direction and the other member,
The pedestal portion, the other member, the guide member, and the pressing member are integrally connected,
The one member is integrally connected to one of the left and right ends of the other member via a flexible sheet-like connecting portion, and the other of the left and right ends of the other member is connected to the other by a first detent mechanism. Is stopped,
The movable part is integrally connected as a whole and extends above the accommodating member from between the one member and the other member, and a second return of the guide member and the movable part. The needle remover for a Huber needle according to any one of claims 2 to 5, wherein the needle member is stopped by the guide member so as to be guided.   The said guide member and the said movable part have a 3rd detent mechanism which stops that the said movable part descend | falls, when the said Huber needle is pulled out. A needle remover for Huber needles.   The width of the gap of the pedestal portion is narrowed inward from the outer peripheral end portion of the pedestal portion so as to guide the tip side needle body to a position sandwiched by the support member. 8. A needle remover for a Huber needle according to any one of 7 above.   The upper edge portion of the gap of the pedestal portion is configured to push up the attachment member of the Huber needle that is deeply stabbed when the distal needle body is welcomed by the support member. The needle extractor for a Huber needle according to claim 8, including a portion inclined so as to become higher as it is closer to the support member until the height becomes the same as the upper surface of the needle.   The gap in the pedestal portion is a saw-toothed overhang that prevents the tip side needle body from reversing by hooking the tip side needle body that returns when the tip side needle body is greeted by the support member. The needle extractor for a Huber needle according to any one of claims 1 to 9, comprising a portion.   The said movable part is further provided in the upper part of the said supporting member, and further has a flip-up prevention member which prevents the Huber needle supported by the said supporting member from jumping up when it is pulled out. A needle remover for a Huber needle according to any one of the above. The movable part is
A pressing member that presses the attachment member supported by the support member toward the support member, and has a shape that does not prevent the attachment member from entering between the pressing member and the support member. The needle extractor for Huber needle according to claim 1, further comprising a pressing member.   13. The Huber according to claim 1, wherein the guide member and the movable part have a fourth detent mechanism that stops the movable part from descending in a process in which the Huber needle is pulled up. Needle extractor. A method for producing a needle extractor for Huber needle according to claim 6,
In the form in which the one member of the housing member opens with respect to the other member around the sheet-like connecting portion and is arranged beside the other member, the pedestal portion, the housing member, and the guide member, A step of integrally molding with the sheet-like connecting portion;
A step of integrally molding the movable part;
Stopping the molded movable part to the molded guide member by the second detent mechanism;
And after closing the movable part to the guide member, closing the one member of the housing member toward the other member, and stopping the other member by the first detent mechanism. Of manufacturing a needle remover.