JP2010005112A - Connector for artificial hand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for an artificial hand which is simple in structure, is sanitary, and can be inexpensively manufactured, and with which a tool can be easily attached/detached to/from the artificial hand. <P>SOLUTION: The connector 1 for the artificial hand includes a frame 20 attached to a palm 10, a prismatic tube member 30 fixed to the frame 20, a prism member 40 housed in the prismatic tube member 30, and a spoon 50 as the tool attached at one end of the prism member 40. The prismatic tube member 30 is provided with a prismatic tube part 31 in a hexagonal prism shape opened at one end and a planar magnet provided on the bottom surface of the prismatic tube part 31. Further, the prism member 40 is provided with a prism part 41 in a hexagonal prism shape and a planar magnetic member embedded near the distal end of the prism part 41. By inserting and removing the prismatic tube member 30 and the prism member 40, the spoon 50 can be mounted/detached on/from the frame 20. Also, the connector 1 for the artificial hand is manufactured inexpensively with a simple and sanitary structure. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a prosthetic hand connector that connects a prosthetic hand and a tool.

  Auxiliary tools that are easy to grip for people with weak hand grip are used. There are various auxiliary tools. For example, the eating and drinking aid of Patent Document 1 includes a handle portion that is gripped by a hand, a support shaft that protrudes from one end of the handle portion, and a spoon or fork body that is attached to the tip of the support shaft. The support shaft is rotatably attached to the handle portion, and the handle portion includes a stopper that fixes the support shaft and stops the rotation of the support shaft.

JP 2006-231081 A

  However, in the conventional example shown in Patent Document 1, although it is an eating and drinking aid that can be easily gripped by a person with weak grip, the handicapped person, for example, a person who lacks a finger Since it cannot hold | grip, the problem that this food aid cannot be used is mentioned. Another problem is that it is not hygienic because it is necessary to replace the fork or spoon with a portion that directly touches the food.

  An object of the present invention is to provide a joint device for a prosthetic hand that can be manufactured hygienically and inexpensively with a simple structure and that allows a tool to be easily attached and detached from the prosthetic hand.

  The present invention comprises an attachment member attached to a human body, a first connection portion fixed to the attachment member, and a second connection portion connected to the first connection portion and mounted with a tool, The first connecting part and the second connecting part can be inserted into and extracted from each other and cannot be rotated in a plane intersecting the inserting / extracting direction, and the first connecting part and the second connecting part And a magnetic member is provided on the other of the first connecting portion and the second connecting portion.

In this invention, the joint for a prosthetic hand is configured to include an attachment member, a first connecting part, and a second connecting part. For example, the tool is attached to the prosthetic hand by inserting and removing the second connecting part from the first connecting part. Or can be easily removed. Since the prosthetic hand connector can be manufactured with a simple structure, it can be manufactured at low cost.
Furthermore, since the second connecting portion can be fixed to the first connecting portion without using a tool or the like with the magnet and the magnetic member, the tool can be easily attached to or detached from the mounting member. For this reason, when using multiple types of tools, for example, when using a spoon or fork when eating, the spoon and fork can be easily detached from the mounting member and used.
Moreover, since it is possible to remove the spoon and fork with the second connecting portion, it is not necessary to have the spoon and fork directly, and it is hygienic.

  The present invention includes a cylindrical member having a detent portion on one of the first connecting portion and the second connector, and the detent is engaged with the other of the first connecting portion and the second connecting portion. The structure provided with the columnar member which has an engaging part to match is preferable.

In this invention, since the rotation prevention part of a 1st connection part and the engaging part of a 2nd connection part engage, it can control that a 1st connection part and a 2nd connection part rotate.
For this reason, since the tool mounted on the second connecting portion is connected to the attachment member without rotating, the tool can be easily handled.
For example, even when a screwdriver is used as a tool when machining, the work can be easily performed using the prosthetic joint.

  In the present invention, it is preferable that the magnetic member is provided in the vicinity of the tip of the second connecting portion and embedded in the second connecting portion.

In this invention, since the magnetic member is embedded in the second connecting portion, the magnetic member and the magnet can be fixed indirectly without being directly fixed. Can be adjusted. For this reason, it can design to the adhering force which can attach or detach easily even a user with weak power, such as elderly people.
Further, since the magnetic member is not exposed to the outside, the rust prevention effect of the magnetic member can be obtained. For this reason, even when using tableware such as a spoon or fork as a tool attached to the second connecting portion, it can be used in a sanitary manner.

It is preferable that the cylindrical member is provided with a magnet, and the columnar member is a magnetic material.
In this invention, since the 2nd connection part is a magnetic material, even if it does not provide a magnetic member, it can adhere to a magnet. Therefore, these can be fixed only by providing a magnet in the first connecting portion. Therefore, the magnetic member can be omitted.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. 1-4 show the prosthetic hand connector of the first embodiment.
FIG. 1 is an overall perspective view of a prosthetic hand connector and a human body according to a first embodiment. FIG. 2 is a front view of a cross-section of a part of the prosthetic hand connector of the first embodiment.
As shown in FIGS. 1 and 2, the prosthetic hand connector 1 according to the first embodiment includes a frame 20 as an attachment portion attached to the palm 10 and formed of acrylic resin, and a first fixed to the frame 20. A rectangular tube member 30 as a connecting portion and a rectangular column member 40 as a second connecting portion accommodated in the rectangular tube member 30 are provided. A spoon 50 as a tool is attached to one end of the prism member 40. Further, the rectangular tube member 30 is fixed to the frame 20 by a fixing member 60.

  Fingers of the palm 10 are lost, and the frame 20 is formed in a curved shape so as to be able to contact along the outer peripheral curved surface of the palm 10 to be attached. When the frame 20 is attached to the palm 10, the palm 10 and the frame 20 are separated. It becomes easy to get used to.

  The rectangular tube member 30 is a metal member such as non-magnetic stainless steel, and has a hexagonal prism-shaped rectangular tube portion 31 with one end opened to accommodate the rectangular column member 40, and a flat plate-like shape provided on the bottom surface of the rectangular tube portion 31. The magnet 32 and the latching | locking part 33 which protruded in the radial direction from the bottom part side surface of the square cylinder part 31 provided so that engagement with the fixing member 60 was provided.

The prism member 40 is made of acrylic resin or the like, and includes a hexagonal prism portion 41 accommodated in the rectangular tube member 30, a flat magnetic member 42 embedded in the vicinity of the tip of the prism portion 41, and this A cylindrical tool mounting portion 43 is provided with one end abutting on the prism portion 41 on the side where the magnetic member 42 is not embedded and the spoon 50 mounted on the other end. The tool mounting portion 43 is formed to have a diameter larger than that of the prism portion 41.
The prism portion 41 has an insertion portion 41A and a covering portion 41B. The magnetic member 42 is embedded in the prism portion 41 by sandwiching the magnetic member 42 therebetween. Furthermore, the tool mounting portion 43 includes a slit 44 that fits with the handle of the spoon 50.

FIG. 3 is a front view, partly in section, showing a fixed state of a fixing member of the prosthetic hand connector of the first embodiment.
As shown in FIG. 3, the fixing member 60 that fixes the frame 20 and the rectangular tube member 30 is the same acrylic resin as the frame 20, and can be bonded to the frame 20 by welding at the time of polymerization.
On the other hand, since the rectangular tube member 30 is a metal material such as nonmagnetic stainless steel, the fixing member 60 and the rectangular tube member 30 are fixed by engaging the fixing member 60 with the engaging portion 33 without welding. Yes.

Drawing 4 is a sectional view for explaining a manufacturing method of prismatic part 41 of a joint for artificial hands of a 1st embodiment.
As shown in FIG. 4A, a mold 30A identical to the rectangular tube member 30 is prepared in advance, and the mold 30A and the magnetic member 42 are arranged as shown in FIG. 4B. At this time, the magnetic member 42 is fixed to the magnet 32 provided on the bottom surface of the mold 30A with a predetermined force by a magnetic force. Next, as shown in FIG. 4C, the raw material of the insertion portion 41A is poured into the mold 30A.
Then, as shown in FIG. 4D, after the poured raw material is hardened, the raw material is extracted from the mold 30A with a traction force equal to or greater than a predetermined force. Thereby, what formed the magnetic member 42 and insertion part 41A integrally is obtained.
Thereafter, the tool mounting portion 43 and the prism portion 41 separately manufactured with the same acrylic resin as that of the prism portion 41 are bonded together to obtain the prism member 40 (see FIG. 2).

Next, as shown in FIG. 4 (E), a small amount of the same material covering material as that of the insertion portion 41A is poured into the mold 30A, and then, as shown in FIG. The integral with the member 42 is inserted so that the magnetic member 42 is on the lower side, and is brought into contact with the previously poured coating material liquid surface as shown in FIG. 4 (G). In this state, the covering material is solidified, and the magnetic member 42 at the tip of the insertion portion 41A is covered with the covering portion 41B.
Then, as shown in FIG. 4H, by extracting these from the mold 30A, the magnetic member 42 is sandwiched between the insertion portion 41A and the covering portion 41B and formed integrally.

  According to the first embodiment as described above, the following operational effects can be obtained.

(1) The prosthetic hand connector 1 according to the first embodiment includes a frame 20, a rectangular tube member 30, and a prismatic member 40, and the spoon 50 is framed by inserting and removing the prismatic member 40 from the rectangular tube member 30. 20 can be easily mounted or removed. In addition, since the prosthetic hand connector 1 can be manufactured with a simple structure, it can be manufactured at low cost.
Furthermore, since the prism member 40 can be fixed to the square tube member 30 without using a tool or the like by the magnet 32 and the magnetic member 42, the spoon 50 can be easily attached to or detached from the frame 20. For this reason, when using a spoon or a fork when eating, the spoon 50 and the fork can be easily detached from the frame 20 and used.
Further, since the spoon 50 and the fork can be removed by holding the tool mounting portion 43, it is not necessary to directly have the spoon 50 and the fork, and it is hygienic.

(2) Since the rectangular cylinder member 30 and the rectangular column member 40 can fix the rectangular column member 40 to the rectangular cylinder member 30 without using a tool etc. with the magnet 32 and the magnetic member 42, the spoon 50 can be easily attached. It can be attached to or removed from the frame 20. For this reason, when using multiple types of tools other than a spoon, for example, when using a fork or knife when eating, the spoon 50 and fork or knife can be easily detached from the frame 20 and used. it can.

(3) In the prosthetic hand connector 1 according to the first embodiment, the hexagonal cylindrical prism 31 of the rectangular cylinder member 30 and the hexagonal prismatic prism 41 of the prismatic member 40 are engaged with each other. And the rotation of the prism member 40 can be restricted.
For this reason, since the spoon 50 with which the prismatic member 40 is mounted | worn is connected with the flame | frame 20 without rotating, the spoon 50 can be handled easily.
Moreover, since rotation with the square cylinder part 31 and the prism part 41 can be controlled, in addition to the case where the spoon 50 is used, for example, when a screwdriver is used as a tool when performing a machine work, for example. The work can be easily performed using the prosthetic joint 1.

(4) In the prosthetic hand connector 1 of the first embodiment, since the magnetic member 42 is sandwiched between the insertion portion 41 </ b> A and the covering portion 41 </ b> B, the magnetic member 42 and the magnet 32 are embedded in the prismatic member 40. Since the magnetic member 42 can be indirectly fixed rather than directly fixed, the fixing force between the magnet 32 and the magnetic member 42 can be adjusted by the embedding condition of the magnetic member 42, specifically, the thickness of the covering portion 41B. For this reason, it can design to the adhering force which can attach or detach easily even a user with weak power, such as elderly people.

(5) Since the magnetic member 42 is not exposed to the outside, the antirust effect of the magnetic member 42 can be obtained. For this reason, even when using dishes such as the spoon 50 attached to the prism member 40, it can be used in a sanitary manner.

(6) Since the fixing member 60 is welded to the frame 20 and engaged with the rectangular tube member 30 to connect and fix the frame 20 and the rectangular tube member 30, the frame 20 and the rectangular tube member 30 are simply structured. Can be connected and fixed.
Moreover, since it can connect and fix by welding or engagement, the selectivity of the material of the frame 20, the rectangular tube member 30, and the fixing member 60 can be improved.

(7) Since the frame 20 is formed in a curved shape so as to be able to contact along the outer peripheral curved surface of the palm 10 to be attached, when the frame 20 is attached to the palm 10, the palm 10 and the frame 20 are easily adapted to each other. It has become. Moreover, since the frame 20 is formed of an acrylic resin that can be easily processed, it can be easily manufactured according to the shape of the palm 10 of the user.

(8) Since the prismatic member 40 includes the cylindrical tool mounting portion 43 formed larger in diameter than the prismatic portion 41, the spoon 50 can be attached and detached while holding the tool mounting portion 43. For this reason, attachment and detachment of the spoon 50 can be performed easily. Moreover, since it is not necessary to hold | grip the spoon 50 directly, it can be used hygienically.

(9) Since the magnetic member 42 is disposed on the mold 30A, the magnetic member 42 can be fixed to the magnet 32 provided on the bottom surface of the mold 30A with a predetermined force by a magnetic force. For this reason, even if the raw material of the insertion part 41A is poured into the mold 30A, the magnetic member 42 does not move, and the positional deviation of the magnetic member 42 can be prevented.

(10) A small amount of the same raw material covering material as that of the insertion portion 41A is poured into the mold 30A, and the insertion portion 41A is inserted with the magnetic member 42 facing downward. The magnetic member 42 at the tip of the portion 41A can be covered with the covering portion 41B.
Therefore, the magnetic member 42 can be easily sandwiched between the insertion portion 41A and the covering portion 41B and integrally formed. Moreover, since the thickness of the magnetic member 42 can be adjusted by the amount of the covering material to be the covering portion 41B, the fixing force between the magnet 32 and the magnetic member 42 can be easily adjusted.

Hereinafter, a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a cross-sectional view of a part of the prosthetic hand connector of the second embodiment.
As shown in FIG. 5, in the prosthetic hand connector 1 of the second embodiment, the finger member 70 is provided in the prosthetic hand connector 1 similar to the first embodiment. The finger member 70 is a linear member in which a plurality of ball joints 71 are connected, and is provided with a fingertip member 72 imitating the skin of a human finger at one end. The fingertip member 72 is made of a material having a high frictional resistance such as silicon rubber or urethane rubber.

  The other end is connected and fixed to the frame 20 by a fixing member 73. Like the fixing member 60, the fixing member 73 is made of the same acrylic resin as the frame 20. The fixing member 73 is welded to the frame 20 at the time of polymerization, and engages with the finger member 70 to connect and fix the frame 20 and the finger member 70 together. Yes.

FIG. 6 is a cross-sectional view of the finger member. FIG. 7 is a cross-sectional view of the ball joint.
As shown in FIGS. 6 and 7, the finger member 70 is formed by connecting a plurality of ball joints 71. The ball joint 71 has a cross-section in which the upper surface of the truncated cone 711 and a circular sphere 713 are combined in a contour shape like a front rear circular ridge, and the circular sphere 713 has a cylindrical cylindrical hole 714 formed therein. The base 711 has a hole 712 having the same shape that contacts the circular sphere 713. A large diameter portion 712A is formed on the opening side of the hole portion 712. Further, the hole 712 and the cylindrical hole 714 communicate with each other, and the ball joint 71 is hollow.

  Then, the two ball joints 71 are connected by fitting the hole 712 and the circular ball 713 of the adjacent ball joint 71. At this time, since the gap d is provided between the hole 712 to be fitted and the circular sphere 713, the adjacent ball joints 71 can be rotated and bent. Further, the hole 712 and the circular sphere 713 are in contact with each other with a predetermined frictional force. For this reason, the adjacent ball joints 71 turn and bend when a force of a predetermined level or more is applied, but the shape can be maintained without rotating even if a force of a predetermined level or less is applied. . Similarly, the finger member 70 is formed by fitting a plurality of adjacent ball joints 71.

  According to the second embodiment as described above, the operational effects (1) to (10) can be achieved, and the following operational effects can also be achieved.

(11) Since the prosthetic hand connector 1 of the second embodiment includes the finger member 70, the finger member 70 includes the ball joint 71 when attached to the palm 10 having the healthy finger 11. , Can be transformed into various shapes.

(12) The function of the hand, for example, picking, pulling, lifting, etc., can be achieved in cooperation with the healthy finger 11. For this reason, for example, when eating, the soup can be drunk with the spoon 50 and the bread can be picked up with the healthy finger 11 and the finger member 70 as it is, so that the meal and light work can be performed more easily.

Hereinafter, a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a cross-sectional view of a part of the prosthetic hand connector of the third embodiment.
As shown in FIG. 8, the prosthetic hand connector 1 of the third embodiment is housed in a frame 20 formed of acrylic resin, a rectangular tube member 30 fixed to the frame 20, and the rectangular tube member 30. The prism member 40 is provided. A spoon 50 as a tool is attached to one end of the prism member 40.

  The frame 20 is formed in a curved shape so as to be able to contact along the outer peripheral curved surface of a palm (not shown) to be attached, and when the frame 20 is attached to a palm (not shown), the palm (not shown) and the frame 20 are easily adapted. . The frame 20 has a nut hole 21 for fixing the square tube member 30, and the square tube member 30 has a bolt 34 that is screwed into the nut hole 21.

  The rectangular tube member 30 is a nonmagnetic member such as nonmagnetic stainless steel, and is a hexagonal columnar rectangular tube portion 31 having one end opened to accommodate the rectangular column member 40, and a flat plate-like shape provided on the bottom surface of the rectangular tube portion. A magnet and a bolt 34 provided on the bottom surface of the rectangular tube portion 31 that can fix the rectangular tube member 30 to the frame 20 by being screwed into the nut hole 21 are provided.

The prismatic member 40 is made of a magnetic material such as magnetic stainless steel, and includes a hexagonal prismatic prism portion 41 accommodated in the rectangular tube member 30, and a tool attachment 46 that connects the prismatic portion 41 and the spoon 50. ing.
The tool mounting portion 46 includes a pedestal 47 that comes into contact with the prism portion 41 on the side not facing the magnet 45, a flat plate portion 48 to which the spoon 50 is attached, for example, a plate portion 48 formed to a thickness of 3 mm, and a bolt 80. And an insertion portion 49 to be inserted.

  The spoon 50 is provided with an insertion portion 51 through which a bolt 80 is inserted into the handle portion. The bolt 80 is inserted into the insertion portion 51 and the insertion portion 49 of the tool mounting portion 46, and from the opposite side of the bolt 80. The tool mounting portion 46 and the spoon 50 are connected and fixed by screwing the nut 90 into the bolt 80.

  According to the third embodiment as described above, the effects (1) to (3), (7), and (9) can be achieved, and the following effects can also be achieved.

(13) In the prosthetic hand connector 1 of the third embodiment, since the prismatic member 40 is formed of a magnetic member such as magnetic stainless steel, the prismatic member 40 is provided with the magnetic member 42 shown in the first and second embodiments. There is no need to provide. For this reason, since the connection tool 1 for artificial hands can be made into a simpler structure, it can be manufactured easily and manufacturing cost can be reduced.

(14) The prosthetic hand connector 1 of the third embodiment does not need to be provided with the covering portion 41 </ b> B shown in the first embodiment and the second embodiment that covers the magnetic member 42. For this reason, since the connection tool 1 for artificial hands can be made into a simpler structure, it can be manufactured easily and manufacturing cost can be reduced.

(15) Since the prosthetic hand connector 1 of the third embodiment has the flat plate portion 48 and the insertion portion 49 in the tool mounting portion 46 and the insertion portion 51 in the handle of the spoon 50, the first embodiment It is not necessary to provide the slit 44 shown in the embodiment and the second embodiment. For this reason, since the connection tool 1 for artificial hands can be made into a simpler structure, it can be manufactured easily and manufacturing cost can be reduced.

(16) In the prosthetic hand connector 1 of the third embodiment, the frame 20 has a nut hole 21 for fixing the square tube member 30, and the square tube member 30 is screwed into the nut hole 21. 34, the nut hole 21 can accommodate the bolt 34.
For this reason, it can prevent that the volt | bolt 34 penetrates the flame | frame 20, and the front-end | tip of the volt | bolt 34 protrudes to the palm 10 side, and contacts with the palm 10. Therefore, the familiarity between the frame 20 and the palm 10 can be improved.

The present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
FIG. 9 is a modification of the position where the magnet and the magnetic member are provided. FIG. 10 is a modification of the prismatic member shown in FIG.
Although the magnet 32 is provided on the bottom surface of the rectangular tube portion 31, the present invention is not limited thereto, and may be provided on the side surface of the rectangular tube portion 31 as shown in FIG. 9. For example, in FIG. 9A, the magnet 32 is disposed at the center of the outer peripheral side surface of the rectangular tube portion 31, FIG. 9B is the magnet 32 disposed above the outer peripheral surface of the rectangular tube portion 31, and FIG. A magnet 32 is disposed at the upper end of the outer peripheral side surface of the portion 31. Correspondingly, the magnetic member 42 may be provided on the prism portion 41.
Also, as shown in FIG. 10, the prismatic part 41 shown in FIG. 9 does not need to be an integral object, and may be configured by an insertion part 41A and a covering part 41B.

Although the magnetic member 42 is provided in the prismatic part 41 and the magnet 32 is provided in the rectangular cylinder part 31, the present invention is not limited thereto, and the magnet 32 may be provided in the prismatic part 41 and the magnetic member 42 may be provided in the rectangular cylinder part 31. .
The prism portion 41 is formed of acrylic resin or the like. However, the present invention is not limited thereto, and the prism portion 41 may be formed of a metal material such as aluminum or nonmagnetic stainless steel and a commercially available fixed plastic material.
Moreover, although the insertion part 41A and the covering part 41B are made of the same raw material, the present invention is not limited to this, and the prismatic part 41 may be formed from different raw materials.

  The hexagonal cylindrical prism 31 and the hexagonal prism 41 are not limited to this, but may be triangular and triangular. That is, any shape may be used as long as the rectangular tube portion 31 and the rectangular column portion 41 can be engaged with each other so as not to rotate.

  Although the spoon 50 is attached to the tool attachment portion 43, the present invention is not limited thereto, and a fork or knife may be attached, a mechanical tool such as a screwdriver may be attached, and a writing instrument such as a pencil may be attached. That is, any tool can be used as long as it is originally gripped with a hand.

  Although the joint prosthesis 1 for the prosthetic hand according to the second embodiment includes one finger member 70, the configuration is not limited to this, and may include two or more finger members 70.

  In the prosthetic hand connector 1 of the third embodiment, the tool mounting portion 46 and the spoon 50 are fixed by one set of bolts 80 and nuts 90, but the present invention is not limited thereto, and two or more sets of bolts 80 and nuts 90 are provided. It is good also as a structure.

  The joint prosthesis 1 for the third embodiment is fixed by screwing the nut hole 21 provided in the frame 20 and the bolt 34 provided in the square tube member 30, but is not limited thereto. Any configuration may be used as long as these can be fixed. For example, the frame 20 may be provided with bolts, and the rectangular tube member 30 may be provided with nut holes.

  INDUSTRIAL APPLICABILITY The present invention can be used for a prosthetic hand that restores hand functions, such as a meal assistance tool and a light work maintenance assistance tool. It can also be used for palms and forearms.

1 is an overall perspective view of a joint for a prosthetic hand and a human body according to a first embodiment. The front view which made a part of coupling for prosthetic hands of 1st Embodiment into the cross section. The front view which made the cross section the part showing the fixed state of the fixing member of the joint device for artificial hands of 1st Embodiment. Sectional drawing for demonstrating the manufacturing method of the prismatic part of the coupling tool for artificial hands of 1st Embodiment. The figure which made some cross sections of the joint tool for artificial hands of 2nd Embodiment. Sectional drawing of a finger member. Sectional drawing of a ball joint. The figure which made some cross-sections of the joint device for artificial hands of 3rd Embodiment. The figure which shows the modification of the position in which a magnet and a magnetic member are provided. The figure which shows the modification of the prismatic member shown by FIG.

Explanation of symbols

1 ... Connector for prosthetic hand
10 ... Palm (human body)
20 ... Frame (mounting part)
30 ... Square tube member (first connecting portion)
31 ... Square tube (non-rotating part)
32, 45 ... Magnet
40 ... prismatic member (second connecting part)
41 ... prismatic part (engagement part)
42 ... Magnetic member 43, 46 ... Tool mounting part
50 ... spoon (tool)

Claims (4)

An attachment member attached to a human body, a first connection part fixed to the attachment member, and a second connection part connected to the first connection part and mounted with a tool;
The first connection part and the second connection part can be inserted into and extracted from each other and cannot be rotated in a plane intersecting the insertion / extraction direction, and the first connection part and the second connection part A prosthetic hand connector characterized in that a magnet is provided on one of the parts and a magnetic member is provided on the other of the first connecting part and the second connecting part. The prosthetic hand connector according to claim 1,
The cylindrical member which has a rotation prevention part in one side of said 1st connection part and said 2nd connection tool, and the engagement which engages with said rotation prevention in the other of said 1st connection part and said 2nd connection part A prosthetic hand connector comprising a columnar member having a portion. The prosthetic hand connector according to claim 1 or 2,
The prosthetic hand connector, wherein the magnetic member is provided in the vicinity of the tip of the second connecting part and embedded in the second connecting part. The prosthetic hand connector according to claim 2,
The tubular member has a magnet, and the columnar member is a magnetic material.

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