JP7249869B2 - Connectors, tubing sets and gastrostomy catheter sets - Google Patents

Description

The present invention relates to a connector, a tube set comprising a connector and a tube, and a gastrostomy catheter set comprising a connector, a tube and a gastrostomy catheter.

BACKGROUND ART A gastrostomy catheter has been conventionally used for administering nutrients and the like directly into the stomach through the abdominal wall for people who have difficulty ingesting food through the mouth or nose. Such gastrostomy catheters (hereinafter also referred to as catheters) include tube-type catheters integrally attached with tubes for supplying nutrients, and detachable (exchangeable) tubes via connectors. Button-type catheters attached to the body are known. In a button-type catheter, it is necessary to connect a tube via a connector when administering nutritional supplements.

In particular, in recent years, the use of highly viscous nutritional supplements has become mainstream in order to prevent diarrhea in users. When a high-viscosity nutrient is added, the injection resistance increases compared to when a low-viscosity nutrient is added. Therefore, it is necessary to apply a large load to the tube to inject the nutrient. With regard to the configuration of the connector and the gastrostomy catheter, consumers have desired a connector that can be latched (engaged) so that the connector connected to the tube does not come off the gastrostomy catheter due to the load applied to the tube.

For example, Patent Document 1 discloses a connection structure that connects a tube and a catheter using a connector (described as a connecting member in the document).
In this connection structure, when the user pulls the tube, the engaging portion provided on the connector bends so as to engage with the engaged portion provided on the tube, and the engagement is released. is described. In this way, the catheter connected to the connector (described as a fistula catheter in the document) is prevented from coming off the fistula.

Japanese Unexamined Patent Application Publication No. 2011-5119

However, in the connection structure described in Patent Document 1, the engagement between the connector and the catheter tends to be released unexpectedly.
Specifically, the connector described in Patent Document 1 includes a substantially C-shaped engaging portion that can be slidably engaged with the engaged portion of the catheter, and a substantially C-shaped guide portion that engages with the fixed portion of the tube. , provided. The guide part is arranged in parallel with the engaging part with a space therebetween, and is engaged with the part to be fixed of the tube when the tube is slidably inserted.

The open sides of both the engaging portion and the guide portion, which are both substantially C-shaped, are provided in the same direction. The engaging portion of the connector is engaged with the catheter, and the tube is inserted from the open side of the guide portion of the connector to be attached. Sometimes it pushes you inside. At this time, the connector pushed into the tube moves to the side opposite to the open side of the engaging portion, so that the engagement of the engaging portion with the catheter may be released.

An object of the present invention is to provide a connector, a tube set, and a gastrostomy catheter set that can stabilize the engagement state between the connector and the catheter.

The connector of the present invention is a connector for connecting a gastrostomy catheter having a long shaft with a lumen and inserted into the body and a body surface portion exposed to the body surface, and a tube for feeding nutrients. A main body portion, a connection portion connected to the lumen, and a hook portion that can be engaged with and disengaged from the body surface portion, and the hook portion is in a state where the connection portion is connected to the lumen. and is rotatably supported by the main body so as to be displaceable between an engagement position where it engages with the body surface and a release position where the engagement with the body surface is released. It is characterized by
A tube set according to the present invention includes the connector and the tube connected to the connector.
A gastrostomy catheter set of the present invention is characterized by comprising the connector and the gastrostomy catheter connected to the connector.

According to the connector, tube set, and gastrostomy catheter set of the present invention, it is possible to provide a connector, tube set, and gastrostomy catheter set capable of stabilizing the engagement state between the connector and the catheter.

1 is a side view of a gastrostomy catheter set according to this embodiment; FIG. FIG. 2 is an upper perspective view showing a portion (upper portion) of the gastrostomy catheter set of FIG. 1; Fig. 2 is an exploded perspective view showing a portion of the gastrostomy catheter, and the body and hook portions of the connector; (a) is a side view showing part of the tube set with the hook portion in the first position, and (b) is a side view showing part of the gastrostomy catheter set with the hook portion in the second position. It is a diagram.

Hereinafter, configurations of the connector 47, the tube set 41, and the gastrostomy catheter set 41X according to the embodiment of the present invention will be described mainly with reference to FIGS. 1 to 3. FIG. FIG. 1 is a side view of a gastrostomy catheter set 41X according to this embodiment, and FIG. 2 is an upper perspective view showing a portion (upper portion) of the gastrostomy catheter set 41X of FIG. FIG. 3 is an exploded perspective view showing a portion of the gastrostomy catheter set 41X, the body portion 47a of the connector 47, and the hook portion 48. FIG.

The embodiments described below are merely examples for facilitating understanding of the present invention, and do not limit the present invention. That is, the shape, size, arrangement, etc. of the members described below can be changed and improved without departing from the scope of the present invention, and the present invention naturally includes equivalents thereof.
Moreover, in all the drawings, the same constituent elements are denoted by the same reference numerals, and overlapping descriptions are omitted as appropriate.

＜＜Overview＞＞
The connector 47 according to the embodiment of the present invention includes a gastrostomy catheter 42 having a long shaft 44 provided with a lumen 44a shown in FIG. 3 and inserted into the body and a body surface portion 43 exposed to the body surface, It connects with a tube 46 for feeding a nutrient.
The connector 47 includes a body portion 47a, a connecting portion 47d connected to the lumen 44a shown in FIG.
The hook portion 48 can be displaced between an engaging position for engaging with the body surface portion 43 and a disengaged position for releasing the engagement with the body surface portion 43 while the connecting portion 47d is connected to the lumen 44a. It is characterized in that it is rotatably supported by the main body portion 47a.

According to the above configuration, in a state in which the connection portion 47d is connected to the lumen 44a, the hook portion 48 can be rotated with respect to the main body portion 47a to switch between the engagement position and the release position. It is possible to suppress the unexpected release of the engaged state. Furthermore, the engagement of the hook portion 48 can be released as desired.

In this document, "engagement" is not necessarily limited to a state in which two objects are in contact with each other, but a state in which one object is separated from the other object in a "predetermined direction" relative to the other object. It also includes a state in which they come into contact when displaced. In particular, the above-mentioned "predetermined direction" according to the present invention refers to the direction in which the connector 47 is separated from the shaft 44. As shown in FIG.

In addition, in this document, the tube set 41 is defined as comprising a connector 47 and a tube 46 connected to the connector 47 .
The gastrostomy catheter set 41X includes a connector 47 and a gastrostomy catheter 42 connected to the connector 47, and further includes a tube 46.

<Gastrostomy catheter set>
A gastrostomy catheter set 41X according to this embodiment includes a connector 47, a gastrostomy catheter 42 connected to the connector 47, and a tube . As described above, the gastrostomy catheter set 41X does not include the tube 46, but includes the connector 47 and the gastrostomy catheter 42 connected to the connector 47 only.
The gastrostomy catheter 42 includes a button-type body surface portion 43 exposed to the body surface, a shaft 44 integrally connected to the body surface portion 43 at its proximal end, and a bumper provided at the distal end of the shaft 44 . 45 (see FIG. 1) and a check valve (not shown).

The body surface portion 43 is a portion exposed to the user's body surface when attached to the user, and its lower surface engages with a hook portion 48 provided on a connector 47, which will be described later.
A lumen 44a shown in FIG. 3 formed from the body surface portion 43 of the shaft 44 communicates with the central portion and extends in the axial direction.

The bumper 45 has flexibility to be deformable in the radial direction, and a part of a wire (not shown) is coiled inside the bumper 45 . The wire passes from the body surface portion 43 to the shaft 44 , and is configured such that the distal end portion of the wire is disposed inside the bumper 45 .
The bumper 45 is configured to be deformable in a radially expanding direction by applying elastic force of the wire, and to be deformable in a radially contracting direction by removing the wire.

The gastrostomy catheter 42 is not limited to a wire-containing bumper type, and may be of other bumper types. Furthermore, the gastrostomy catheter 42 is not of the bumper type, but is inflated by injecting distilled water or the like so that it can be retained in the stomach, and when it is discharged, it can be inserted into the stomach or discharged out of the stomach. It may be a balloon type.

Examples of materials for the constituent members of the main portions of the gastrostomy catheter 42 include polyvinylidene fluoride resin, polytetrafluoroethylene resin, polyethylene resin, polypropylene resin, silicone rubber, and other rubber materials. However, the material is not limited to such materials, and any material may be used as long as it has appropriate rigidity so as to have regularity.

<Connector>
A connector 47 connects the shaft 44 and the tube 46 . The connector 47 includes a body portion 47a to which the tube 46 is connected, a connection portion 47d inserted into the lumen 44a of the gastrostomy catheter 42, and a hook portion 48 that engages the body surface portion 43 of the gastrostomy catheter 42. Prepare the Lord.
The connector 47 according to the present embodiment is formed with an insertion opening 47b into which the tube 46 is inserted in a direction orthogonal to the projecting direction (downward) of the connecting portion 47d. That is, as shown in FIG. 1, the tube 46 connected to the connector 47 is configured to be pulled out in the direction perpendicular to the shaft 44 (angle type).
In addition, it is not limited to such a structure, A straight type may be used. In the case of the straight type, the tube 46 connected to the connector 47 is pulled out along the extension of the shaft 44 .

A base end portion 47aa of the body portion 47a is formed with an insertion port 47b, and a tube 46 is connected to the insertion port 47b.
The lower surface of the central portion 47ab of the main body portion 47a is a surface capable of coming into contact with the upper surface of the body surface portion 43, and as shown in FIG. A portion 47d is provided. The connecting portion 47d is for connecting to the lumen 44a of the gastrostomy catheter 42. The connecting portion 47d is provided with a fitting rib 47da on the circumference, and the fitting rib 47da is formed on the inner wall surface of the lumen 44a. is fitted into the fitted groove 44c formed in the .

When the fitting rib 47da is fitted into the fitting groove 44c and the hook portion 48 is rotated toward the gastrostomy catheter 42, the hook portion 48d of the hook portion 48 is positioned below the body surface portion 43. A hook portion 48, a fitting rib 47da and a fitted groove 44c are formed so as to do so.
In particular, when the connector 47 is about to be pulled out from the lumen 44a from the state where the hooking portion 48d is engaged with the body surface portion 43, the positional relationship is such that the fitting rib 47da does not slip out of the fitting groove 44c. preferred.

On both side surfaces of the central portion 47ab, a circular support recess 47f in which the rotation protrusion 48f of the hook portion 48 is fitted, and a semicircular shape that guides the rotation of the hook portion 48 and defines a rotation range (path). A guide groove 47h formed in an arcuate U-shape (including a substantially U-shape) is formed. More specifically, the guide groove 47h is formed in a semicircular arc centered on the center of the support recess 47f. The rotating convex portion 48 f functions as a rotating shaft of the hook portion 48 .

As shown in FIG. 3, a holding portion (holding recess 47g) is provided in the central portion 47ab of the main body portion 47a, and a portion to be held (latch 48g) that is locked by the holding portion (holding recess 47g) is attached to the hook portion 48. is provided. The holding portion (holding concave portion 47g) can hold the positional relationship between the body portion 47a and the hook portion 48 by engaging with the held portion (latch 48g). It is arranged on the path of the part (latch 48g). This path is defined by the guide groove 47h as described above.

More specifically, the holding recesses 47g according to the present embodiment are provided one at each end of the guide groove 47h and one at the center of the guide groove 47h, a total of three.
By holding the latch 48g in the holding recess 47g provided in this manner, the posture of the hook portion 48 can be changed at each position as shown in FIGS. 1, 4A and 4B and described later. can hold.

According to the above configuration, when the operator rotates the hook portion 48, the relative positions of the hook portion 48 and the main body portion 47a are changed by the holding portion (holding concave portion 47g) and the held portion (latch 48g). is held, the hook portion 48 can be fixed at a predetermined rotational position.
Therefore, it is possible to easily attach the hook portion 48 to the gastrostomy catheter 42, and to make the hook portion 48 compact so that it does not protrude from the main body portion 47a.
In particular, in this embodiment, the holding recesses 47g provided at both ends of the guide groove 47h are provided on a plane passing through the center of the support recess 47f, and the hook portions 48 are arranged at three positions every 90 degrees. It is configured to be able to hold the posture.

The holding portion is a concave portion (holding concave portion 47g), and the held portion is a latch 48g projecting toward the concave portion (holding concave portion 47g).
According to the above configuration, the latch 48g is physically locked to the concave portion (the holding concave portion 47g), so that it is possible to suppress the influence on the peripheral electronic devices compared to locking by magnetic force. .
Note that the "holding portion" and "held portion" according to the present invention are not limited to those that are physically locked like the holding recess 47g and the latch 48g, and are not limited to those that are physically engaged, such as magnets and magnetic bodies. It may be locked by

In this embodiment, the latch 48g projects parallel to the rotation shaft (rotation projection 48f) at a position radially away from the rotation shaft of the hook portion 48, and the body portion 47a has a holding recess 47g. It is a configuration that is formed.
However, the present invention is not limited to such a configuration, and a concave portion is formed on the peripheral surface of the rotating shaft (rotating convex portion 48f) of the hook portion 48, and a latch is formed at a portion of the main body portion 47a facing the peripheral surface. may be

The distal end portion 47ac of the main body portion 47a is formed so that the upper surface thereof is inclined from the central portion 47ab and becomes thinner toward the distal end so that the operator can easily apply a load obliquely to the extending direction of the connecting portion 47d. It extends and is thinner than the base end portion 47aa and the central portion 47ab.
By forming the tip portion 47ac in such a shape, it becomes easy to completely insert the connecting portion 47d into the lumen 44a so that the lower surface of the central portion 47ab evenly contacts the upper surface of the body surface portion 43.

The hook portion 48 engages with the body surface portion 43 of the gastrostomy catheter 42 as described above, is configured separately from the main body portion 47a, and rotates more than the insertion port 47b of the connector 47 for the tube 46. It is rotatable to the outside in the radial direction with the moving convex portion 48f (rotating shaft) as the center of rotation.
The hook portion 48 is connected to the body surface portion 43 by spanning two disk portions 48a, two first extension portions 48b, two second extension portions 48c, and two second extension portions 48c. It is mainly composed of a hooking portion 48d that can be mated.
The first extending portion 48b extends radially outward from each of the two disk portions 48a. The second extension portion 48c is bent and integrally formed with each of the first extension portions 48b and extends linearly.

The disk portion 48a of the hook portion 48 is provided with a rotation shaft (rotation convex portion 48f) that allows the body portion 47a and the hook portion 48 to rotate relative to each other. The rotating convex portion 48f is arranged in a direction orthogonal to the extending direction of the tube 46. As shown in FIG. In other words, the rotating convex portion 48f is arranged in a direction orthogonal to the extending direction of the insertion port 47b of the tube 46. As shown in FIG.
The hook portion 48 is attached to the main body portion 47a so as to be rotatable about a rotating shaft (rotating convex portion 48f).
It should be noted that the body portion 47a may be provided with a rotating shaft (rotation convex portion) so that the body portion 47a and the hook portion 48 can rotate relative to each other. Each of 47a and hook portion 48 may be provided with a portion that constitutes a rotation shaft.

According to the above configuration, after the work of connecting the tube 46 to the gastrostomy catheter 42 via the connector 47, the work of engaging with the body surface portion 43 can be performed by rotating the hook portion 48. , these work do not interfere.

The hooking portion 48d extends from the second extending portion 48c so as to be bent to one side in an L shape in a side view. A concave portion 48e is formed at least partially on one side of the hook portion 48d of the hook portion 48. As shown in FIG. The hook portion 48 is configured to be rotatable to a position where the recess 48 e accommodates at least a portion of the tube 46 .
According to the above configuration, since the recess 48e is formed in the hook portion 48, the hook portion 48 can be arranged along the tube 46 when the connector 47 is not connected to the body surface portion 43, for example. .

In particular, the tube set 41 composed of the tube 46 and the connector 47 can be compactly carried and stored when the connector 47 is not connected to the body surface portion 43, for example.
In addition, "the position where at least part of the tube 46 is accommodated" refers to the position on the extension of the insertion port 47b when the tube 46 is not attached to the connector 47. As shown in FIG.

Further, the latch 48g is not limited to the position where the recess 48e accommodates a portion of the tube 46, but is engaged with the holding recess 47g at the position where the hook portion 48d of the hook portion 48 is arranged along the tube 46. configuration may be used. For example, "the position along the tube 46" refers to an angular range within 20 degrees from the extension line of the insertion port 47b of the tube 46 with the end face of the insertion port 47b as the center.

<Regarding the holding position of the hook>
Next, the holding position of the hook portion 48 will be described with reference to FIG. 4 in addition to FIG.
FIG. 4(a) is a side view showing a portion of the tube set 41 with the hook portion 48 at the first position, and FIG. 4(b) is a gastrostomy catheter with the hook portion 48 at the second position. It is a side view which shows a part of set 41X.

The holding portion (holding concave portion 47g) and the held portion (latch 48g) are in a locking position when the hook portion 48 is in a position to engage with the body surface portion 43 (the position shown in FIG. 1).
In this embodiment, when the latch 48g is in a position where the latch 48g engages with the central holding recess 47g of the three holding recesses 47g formed on one side surface of the central portion 47ab, the hook portion 48 is attached to the body surface portion 43. It is configured to be in an engaging position.
According to the above configuration, the engagement state between the hook portion 48 and the body surface portion 43 can be preferably maintained by holding the holding recess 47g and the latch 48g in the above positional relationship.

Of the rotation directions of the hook portion 48, the direction in which the hook portion 48 approaches the body surface portion 43 when engaging with the body surface portion 43 is defined as one direction. In this case, the holding portion (holding concave portion 47g) and the held portion (latch 48g) are shifted in one direction from the position where the hook portion 48 engages with the body surface portion 43 (the position shown in FIG. 4A). ) to lock.
According to the above configuration, the holding recess 47g and the latch 48g are locked at the above positions, so that the hook portion 48 can be held along the tube 46, and the connector 47 can be carried and stored compactly. becomes possible.
The direction in which the hook portion 48 approaches the body surface portion 43 when engaging with the body surface portion 43 is (body surface portion 43) refers to the direction approaching the area beyond the connecting portion 47d.

The holding portion (holding concave portion 47g) and the held portion (latch 48g) are shifted in one direction from the position where the hook portion 48 engages with the body surface portion 43 (the position shown in FIG. 4B). ) to lock.
According to the above configuration, the holding recess 47g and the latch 48g are locked at the above positions, so that the hook portion 48 is held in a pre-engagement state, and the hook portion 48 is engaged with the body surface portion 43. You can easily transition to a state where

The hook portion 48 may be configured to sandwich a portion of the body surface portion 43 with the body portion 47a.
In other words, when the engaging portion 48d of the hook portion 48 is arranged to straddle the body surface portion 43 shown in FIG. Just do it.
More specifically, it suffices that either the hook portion 48 or the mutual contact portion of the body surface portion 43 can be elastically deformed. Further, in the natural state, the distance between the contact surface (lower surface) of the main body portion 47a with the body surface portion 43 and the hooking portion 48d is the same as the contact surface (upper surface) of the body surface portion 43 with the main body portion 47a. It is sufficient if the distance is equal to or smaller than the distance between the engaging portion 48d of the front portion 43 and the contact surface (lower surface) that contacts the engaging portion 48d.

According to the above configuration, the connection between the connector 47 and the gastrostomy catheter 42 can be made stronger by holding a portion of the body surface portion 43 between the hook portion 48 and the main body portion 47a.
An elastic member such as urethane may be provided at a portion of the hooking portion 48d that contacts the body surface portion 43. As shown in FIG. According to such a configuration, it is possible to suitably suppress wobbling of the connector 47 with respect to the gastrostomy catheter 42 by bringing the hooking portion 48d into contact with the body surface portion 43 in an elastically deformed state.

When attaching the connector 47 to the gastrostomy catheter 42, the operator holds the hook portion 48 in the position shown in FIG. Push into lumen 44a.
Specifically, the operator pushes the connecting portion 47d of the connector 47 into the lumen 44a of the gastrostomy catheter 42 until the fitting rib 47da of the connector 47 fits into the fitted groove 44c.

Then, in order to stabilize the connection state between the connector 47 and the gastrostomy catheter 42, the operator rotates the hook portion 48 toward the gastrostomy catheter 42 around the rotation shaft (rotating convex portion 48f). so that the hooking portion 48d is positioned below the body surface portion 43 as shown in FIG.
By doing so, in addition to the fitting of the fitting rib 47da and the fitting groove 44c, the hook portion 48 is engaged with the body surface portion 43, and the connector 47 is detached from the gastrostomy catheter 42. can be reliably prevented.

In the above embodiment, the lower surface of the body surface portion 43 is described as being engaged with the hook portion 48, but the present invention is not limited to such a configuration. For example, an engagement target portion such as a groove may be formed on the side surface of the body surface portion 43 , and the target portion may be engaged with the hook portion 48 . According to such a configuration, the hooking portion 48d of the hook portion 48 does not slip under the body surface portion 43, so that the user whose abdomen is in contact with the lower surface of the body surface portion 43 does not feel uncomfortable. be able to.

This embodiment includes the following technical ideas.
(1) A connector for connecting a gastrostomy catheter having a long shaft having a lumen and inserted into the body and a body surface portion exposed to the body surface, and a tube for feeding a nutrient. ,
a main body;
a connecting portion connected to the lumen;
and a hook portion that can be engaged with and detached from the body surface portion,
The hook portion is displaceable between an engagement position where the hook portion is engaged with the body surface portion and a release position where the engagement with the body surface portion is released while the connection portion is connected to the lumen. A connector, wherein the connector is rotatably supported by the main body as described above.
(2) the body portion is provided with a holding portion, and the hook portion is provided with a portion to be held that is locked by the holding portion;
The holding portion can hold the positional relationship between the body portion and the hook portion by engaging with the held portion, and is arranged on the path of the held portion when the hook portion rotates. The connector according to (1), wherein the connector is provided.
(3) the holding portion is a concave portion;
The connector according to (2), wherein the held portion is a latch projecting toward the concave portion.
(4) The connector according to (2) or (3), wherein the holding portion and the held portion are positioned to engage when the hook portion is positioned to engage with the body surface portion.
(5) When the direction of approaching the body surface portion when the hook portion is engaged with the body surface portion is taken as one of the rotation directions of the hook portion,
According to any one of (2) to (4), the holding portion and the held portion are locked at a position shifted in the one direction from a position where the hook portion engages with the body surface portion. connector.
(6) When the direction in which the hook portion approaches the body surface portion when engaging with the body surface portion is defined as one of the rotation directions of the hook portion,
Any one of (2) to (5) wherein the holding portion and the held portion are engaged at a position shifted in the opposite direction of the one direction from a position where the hook portion engages with the body surface portion. connector as described in section.
(7) At least one of the hook portion and the main body portion is provided with a rotation shaft that is relatively rotatable,
The rotating shaft is arranged in a direction orthogonal to the extending direction of the tube,
The connector according to any one of (1) to (6), wherein the hook portion is rotatably attached to the body portion about the rotation shaft.
(8) A tube set comprising the connector according to any one of (1) to (7) and the tube connected to the connector.
(9) the hook portion is formed with a concave portion, at least a portion of which is notched;
The tube set according to (8), wherein the hook portion is configured to be rotatable to a position where the recess accommodates at least a portion of the tube.
(10) A gastrostomy catheter set comprising the connector according to any one of (1) to (9) and the gastrostomy catheter connected to the connector.
(11) The gastrostomy catheter set according to (10), wherein the hook portion clamps a part of the body surface portion between itself and the main body portion.

41 tube set 41X gastrostomy catheter set 42 gastrostomy catheter 43 body surface portion 44 shaft 44a lumen 44b virtual axis 44c fitting groove 45 bumper 46 tube 47 connector 47a body portion 47aa base end portion 47ab center portion 47ac tip portion 47b insertion Mouth 47d Connection portion 47da Fitting rib 47f Support recess 47g Holding recess (holding portion)
47h guide groove 48 hook portion 48a disk portion 48b first extension portion 48c second extension portion 48d hooking portion 48e concave portion 48f rotation protrusion (rotation shaft)
48g latch (held portion)

Claims (10)

A connector for connecting a gastrostomy catheter having a long shaft with a lumen to be inserted into the body and a body surface portion exposed to the body surface, and a tube for feeding nutrients,
a main body;
a connecting portion connected to the lumen;
and a hook portion that can be engaged with and detached from the body surface portion,
The hook portion is displaceable between an engagement position where the hook portion is engaged with the body surface portion and a release position where the engagement with the body surface portion is released while the connection portion is connected to the lumen. is rotatably supported by the main body,
A holding portion is provided on the main body portion, and a held portion to be locked by the holding portion is provided on the hook portion,
The holding portion can hold the positional relationship between the body portion and the hook portion by engaging with the held portion, and is arranged on the path of the held portion when the hook portion rotates. A connector characterized by being provided with . The holding portion is a concave portion,
2. The connector according to claim 1 , wherein the held portion is a latch projecting toward the recess. 3. The connector according to claim 1 or 2 , wherein said holding portion and said held portion are positioned to engage when said hook portion is positioned to engage said body surface portion. When the direction in which the hook portion approaches the body surface portion when engaging with the body surface portion is taken as one direction among the rotation directions of the hook portion,
The connector according to any one of claims 1 to 3 , wherein the holding portion and the held portion are locked at a position shifted in the one direction from a position where the hook portion engages with the body surface portion. . Among the rotation directions of the hook portion, when the direction in which the hook portion approaches the body surface portion when engaging with the body surface portion is set as one direction,
5. The holding portion and the held portion are locked at a position shifted in a direction opposite to the one direction from a position where the hook portion engages with the body surface portion. Connector as described. At least one of the hook portion and the body portion is provided with a rotation shaft that is relatively rotatable,
The rotating shaft is arranged in a direction orthogonal to the extending direction of the tube,
The connector according to any one of claims 1 to 5 , wherein the hook portion is rotatably attached to the body portion about the rotation shaft. A tube set comprising the connector according to any one of claims 1 to 6 and the tube connected to the connector. At least a part of the hook portion is formed with a notched recess,
8. The tube set according to claim 7 , wherein the hook portion is rotatable to a position where the recess accommodates at least a portion of the tube. A gastrostomy catheter set comprising the connector according to any one of claims 1 to 8 and the gastrostomy catheter connected to the connector. 10. The gastrostomy catheter set according to claim 9 , wherein the hook part sandwiches a part of the body surface part with the body part.

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