KR101695454B1 - Balloon infuser having snap fitting assemmbly - Google Patents

Abstract

The present invention relates to a medical device, especially a balloon infuser to enable a strong bond without an adhesive. The balloon infuser comprises an up-and-down unit (30). An upper opening (31) is located at the center of the up-and-down unit (30). An upper connector holder (40) is snap-fitted on the upper opening (31). An upper connector (50) is snap-fitted on a lower side of the upper connector holder (40). An internal shaft (60) is positioned inside the upper connector (50). A flexible expansion member (70) is located between the internal shaft (60) and the upper connector (50), and seals and fixes thereof.

Description

[0001] The present invention relates to a balloon infuser having a snap fitting assemmbly,

The present invention relates to a medical instrument, and more particularly to a balloon infuser.

A balloon infuser, also referred to as a balloon infusion pump or a portable infusion pump (PIP), is used to continuously infuse a drug at a constant rate, such as an anticancer drug, It is a disposable drug injection device used for. It is common that a separate speed adjusting mechanism is used in combination.

Balloon infusers are safe and hygienic from external factors, are easy to carry, do not need separate power supply, and do not have a designation in everyday life, so patients who need continuous medication can go to hospital without hospitalization Research and demand are on the rise.

However, the following problems arise in the case of a common balloon infuser currently used.

The degree of inflation of the balloon refers to the amount of contents contained inside, which is difficult to say accurately. For the user, it is necessary to guess how much of the content remains and how much it has been exhausted by estimating the degree of inflation of the balloon. There is a balloon infuser that displays the remaining amount of contents to the user by printing a scribe line on the outer housing, and the end of the balloon refers to the scribe line of the arc shape. However, the balloon has various curvatures It is difficult to precisely guide it, so it does not solve this problem.

It is also a problem that many components are used in order to maintain the amount of contents discharged, but the adhesive is used because the sealing is important. The use of an adhesive is undesirable not only from the point of view of hygiene as well as of making the manufacturing process difficult and increasing the manufacturing cost.

It is difficult to completely discharge the contents in the state that the contents are almost completely shrunk in order to discharge the contents by the contractile force of the balloon, and the use is terminated with the contents remaining partially on the inside of the balloon or the flow path of the contents. The space in which the contents can not be discharged is referred to as a so-called dead space. Such a dead space exists in a substantial part of a common balloon infuser. The existence of a dead space puts an economic burden on the user.

(Prior art)

United States Patent 2014-0155829 (June 5, 2014)

Chinese Patent 102935252 (February 20, 2013)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems.

A balloon infuser capable of precisely designating the amount of the contents remaining inside the balloon infuser, capable of rigid bonding even without an adhesive, and capable of minimizing the amount of dead space is proposed.

In order to solve the above problems, the present invention provides a balloon infuser having a lifting section (30), wherein a lifting upper section opening (31) is located at the center of the lifting section (30) The upper connector 50 is snap-engaged to the lower side of the upper connector holder 40 and the inner shaft 60 is located inside the upper connector 50 , While a flexible inflation member (70) is positioned therebetween to seal and secure the upper connector (50) and the inner shaft (60).

The upper portion of the inner shaft 60 is engaged with the upper connector 50 and the shape of the inner walls 65, 66 and 67 of the inner shaft 60 is larger than that of the outer walls 55 The expansion member 70 is preferably positioned between the inner wall 65, 66, 67 and the outer wall body 55, 56, 57 corresponding to the shape of the inner wall 65, 56, 57.

It is preferable that any one of the inner walls 66 of the inner walls 65, 66 and 67 and the corresponding outer wall 56 of the inner walls 66 be inclined at different angles.

It is also preferable that the protruding portion 58 is located on one of the outer wall bodies 57 and the protruding portion 58 presses the expanding member 70.

A pair of upper connector holder catching protrusions 32 and an upper connector holder supporting portion 33 are radially formed in the upper opening 31 of the ascending and descending portion 31 and the upper connector holder 40 An upper connector holder seating portion 32a protruding inward is positioned at a lower end of the upper connector holder retaining jaw 32 and the lower connector holding jaw 32 is positioned radially below the upper connector holding jaw 42 and the ascending / It is preferable that the ascending and descending portion seating portion 43a projected outward is located at the lower end of the steel portion supporting portion 43. [

The upper connector holder seating portion 32a is positioned below the upper connector holding jaw 42 to limit the movement of the upper connector holder 40 to the lower side and the seating portion 43a of the ascending / It is preferable to limit the upward movement of the upper connector holder 40 by being positioned below the upper connector holder supporting portion 33. [

An upper connector holder fastening portion 52 protruding outward is located at the upper end of the upper connector 50 and an upper connector shoulder portion 53 protruding outward is located at a lower end of the upper connector 50 The upper connector retaining step 42 is located below the upper connector holder engaging part 52 to limit the movement of the upper connector 50 to the lower side, It is preferable that the connector shoulder portion 53 be positioned to limit the upward movement of the upper connector 50. [

The upper connector holder engaging protrusion 32 and the upper connector holder inserting portion are located radially along the boundary in the ascending and descending portion upper opening 31. The upper connector holder inserting portion is located in the upper connector holder inserting portion, The connector holder 40 is provided with an upper connector engaging protrusion 42 and an ascending and descending portion supporting portion 43 radially along the outer circumference and an ascending and descending portion insertion protrusion 43a 'projecting radially outwardly from the up and down portion supporting portion 43. [ And the ascending and descending portion insertion protrusion 43a 'is inserted into the upper connector holder insertion groove and is engaged.

With the present invention, the amount of the content remaining inside the balloon infuser can be accurately referred to. A separate member called an ascending / descending portion is employed, a graduation line is provided at the end of the ascending and descending portion, a straight line is printed on the outer housing, and the ascending and descending portion is moved up and down synchronously with the expansion or contraction of the balloon, You can tell the exact amount of content.

Further, it is possible to securely fix it without a separate adhesive. Furthermore, since the connector and the connector holder, which are the same parts, can be used only in the upper and lower directions, the manufacturing cost can be reduced.

It is possible to firmly fix the product, and it is possible to manufacture the finished product by simple snap-fastening of the injection parts from the viewpoint of the manufacturer, the process is easy, the manufacturing time is short, and the defect rate is remarkably low.

In addition, the dead space can be reduced, the amount of the contents contained in the balloon infuser can be increased, the user can benefit economically, and the doctor can prescribe the exact amount of the drug.

1 is a perspective view of embodiments of a balloon infuser according to the present invention.
2 is an exploded perspective view of a balloon infuser according to the present invention.
FIG. 3A is a cross-sectional perspective view of the balloon infuser according to the present invention before the contents are injected, and FIG.
FIG. 3B is a cross-sectional perspective view of the balloon infuser according to the present invention when the contents are injected into the infuser or when the medium is used during the infusion after the contents are injected. FIG.
FIG. 3C is a cross-sectional perspective view of the balloon infuser according to the present invention, in which the contents are fully injected, and is a cross-sectional view as viewed from the direction AA in FIG.
4 is an enlarged cross-sectional view of the portion "A" of Fig. 3A, taken along line AA in Fig.
5 is an enlarged cross-sectional view of the portion "B" of Fig. 3B. 4 is a cross-sectional view taken along the line AA of Fig.
FIG. 6 is an enlarged cross-sectional view of a portion radially shifted by 90 degrees from the "A" portion of FIG. 3A, and is a cross-sectional view as viewed from the CC in FIG.
7 is a perspective view of an upper cover 10 of a balloon infuser according to the present invention.
8 is a perspective view of a lower cover 20 of a balloon infuser according to the present invention. For illustrative purposes, a perspective view from above and a perspective view from below are shown together.
9 is a perspective view of a lifting and lowering portion 30 of a balloon infuser according to the present invention. For illustrative purposes, a perspective view from above and a perspective view from below are shown together.
10 is a perspective view of an upper connector holder 40 of a balloon infuser according to the present invention. For illustrative purposes, a perspective view from above and a perspective view from below are shown together. The lower connector holder 100 also has the same shape.
11 is a perspective view of an upper connector 50 of a balloon infuser according to the present invention. For illustrative purposes, a perspective view from above and a perspective view from below are shown together. The lower connector 90 also has the same shape.
12 is a perspective view of an inner shaft 60 of a balloon infuser according to the present invention. For illustrative purposes, a perspective view from above and a perspective view from below are shown together.
13 is a perspective view of an inflation member 70 of a balloon infuser according to the present invention. For illustrative purposes, a perspective view from above and a perspective view from below are shown together. As will be described later, it should be noted that the expansion member 70 is a flexible material that can be inflated, so that its shape may vary.
14 is a perspective view of the outer shaft 80 of the balloon infuser according to the present invention. For illustrative purposes, a perspective view from above and a perspective view from below are shown together.
FIG. 15 shows a balloon infuser according to another embodiment of the present invention, wherein the ascending and descending part 30 and the upper cover 10 are omitted.

The present invention relates to a balloon infuser which is a medical instrument. It should be noted that this is not a direct treatment of the human body.

Hereinafter, "contents" should be understood as a medical fluid such as a chemical solution injected into a balloon infuser according to the present invention.

Hereinafter, the upper side of the drawing will be referred to as the upper side and the lower side of the drawing will be described as the lower side with reference to Figs. 3A to 3C for the sake of explanation. For the sake of explanation, the direction toward the center with respect to the center axis of the balloon infuser according to the present invention is referred to as an inward direction, and the opposite direction is referred to as an outward direction.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1. Explanation of the whole structure

As shown in FIGS. 1 (a) to (d), the balloon infuser according to the present invention can be variously modified in accordance with the shape of the upper cover 10. FIG.

Figures 1 (a) and 1 (c) show a shape close to a quadrangular prism, and Figures 1 (b) and 1 (d) show a shape close to a triangular prism. Although not shown, it may be a shape close to a polygonal column other than a square or triangular shape, or it may be a circular columnar shape.

1 (c) and 1 (d), the gripping grooves 16 exist in the vertical direction, which makes it easy for the user to grasp and to provide structural stability.

2 is an exploded perspective view of a balloon infuser according to the present invention. As described above, the case of FIG. 1 (a) is shown as an example, but the inner parts will be the same as those of the upper cover 10 and the lower cover 20 in other forms.

The balloon infuser according to the present invention includes an upper cover 10, an ascending / descending section 30, an upper connector holder 40, an upper connector 50, an inner shaft 60, an expanding member 70, an outer shaft 80, A lower connector 90, and a lower connector holder 100, and the lower cover 20 is located at the lower side.

The upper connector 50 and the lower connector 90 can use the same members, and the upper connector holder 40 and the lower connector holder 100 can use the same members. This makes it easier to manufacture and lower the manufacturing cost.

The upper cover 10 and the lower cover 20 form the appearance of the balloon infuser according to the present invention. A graduation line 13 is printed on the upper cover 10 and the graduation line 34 of the ascending and descending section 30 ascends and descends according to the ascending and descending of the ascending and descending section 30, Contents can be guided.

The upper connector holder 40 and the upper connector 50 are coupled to the ascending / descending section 30. It is firmly fixed by snap coupling without the need for an adhesive or the like.

Similarly, the lower connector holder 100 and the lower connector 90 are fixed to each other in the lower opening 21 of the lower cover 20 by snap-fitting without adhesive.

An inner shaft 60, an outer shaft 80 and an expansion member 70 are positioned between the upper connector 50 and the lower connector 90.

The inner shaft 60 is fixed to the lifting and lowering portion 30 by the upper connector 50.

The outer shaft 80 is fixed to the lower cover 20 by the lower connector 90.

As the contents are injected into the balloon infuser, the expanding member 70 expands, and the inner shaft 60 and the ascending / descending portion 30 coupled thereto rise. Conversely, as the contents flow out, the expanding member 70 adheres, and the inner shaft 60 and the ascending / descending section 30 coupled to the inner shaft 60 descend.

Hereinafter, each configuration will be described in detail.

2. Detailed description of component

The upper cover 10, the lower cover 20, the ascending / descending section 30, the upper connector holder 40, the upper connector 50, the inner shaft 60, the expanding member 70, 7 to Fig. 14.

Figure 7 shows the top cover 10.

The upper cover 10 is made of a transparent or semitransparent material so that the user can see the lifting and lowering portion 30. Through this, the user can know which graduation line of the graduation line 13 refers to the ascending / descending part 30 ascending and descending from the inside of the upper cover 10.

On the upper surface of the upper cover 10, the mounting portion 11 is located, and the balloon infuser can be mounted on a separate stand for convenient use by the user.

A scale line (13) is printed on one side of the side of the upper cover (10). The scale lines 13 are displayed such that the scales are different in the vertical direction. The scale line 13 is referred to by the scale guide line 34 of the ascending and descending portion 30 as described above.

A step portion 14 formed to be stepped is located along the outer periphery of the end of the upper cover 10 for the purpose of engaging the upper cover 10 and the lower cover 20. [ The step portion 24 of the lower cover 20 is positioned on the step portion 14 of the upper cover 10. [

And the engaging groove 15 is located at a portion of the step portion 14. The coupling protrusion 25 of the lower cover 10 is inserted into the coupling groove 15 and is firmly fixed.

In the embodiment shown in FIG. 7, the upper cover 10 is shown as having four engagement grooves 15 because it has a shape close to a quadrangular pole. However, as shown in FIGS. 1B and 1D, Shape, and in the case of a polygonal column other than a square or triangular shape, a different number of coupling grooves will be provided. In the case of a circular column shape, it is preferable for the engagement to locate the engagement groove at two or more positions along the outer periphery of the upper cover.

8 shows the lower cover 20.

A lower opening 21 is located inside the center of the lower cover 20. The user can access the injection opening 81 through the lower opening 21 to inject the contents through the lower opening 21 or to supply the contents to the user in a quantitative manner.

The lower connector holder catching jaw 22 and the lower connector holder supporting portion 23 are projected upward in a radial direction along the boundary of the lower opening 21. The upper connector holder latching jaw 22 and the lower connector holder supporting portion 23 are located in a pair so as to face each other, but the position and the number thereof can be changed.

A lower connector holder seating portion 22a protruding inward is located at the upper end of the lower connector holder locking jaw 22.

An inner downward inclined surface is located on the inner surface of the lower connector holder seating portion 22a. When the lower connector holder 100 is inserted, the lower end of the lower connector holder 100 moves along the inclined surface, and is snap-engaged with the lower end of the lower connector holder 100 when the lower connector holder 100 is inserted. As a result, the upward movement of the lower connector holder 100 is restricted.

Meanwhile, for this coupling, the lower connector holder latching jaw 22 and the lower connector holder seating portion 22a need to be slightly moved, and the seating space 22b is located outside.

The lower connector holder supporting portion 23 is located at a portion shifted by 90 degrees to the lower connector holder engaging jaw 22. When inserting the lower opening 21 into the lower connector holder 100, the lower cover seat portion 103a is positioned above the lower connector holder supporting portion 23 as shown in Fig. The movement of the lower connector holder 100 to the lower side is restricted.

By this snap coupling, the upward movement and the downward movement of the lower connector holder 100 relative to the lower cover 20 are carried out by the lower connector holder locking jaw 22 and the lower connector holder supporting portion 23, respectively, So that it can be firmly fixed without using any additional member such as an adhesive.

Fig. 9 shows the ascending / descending section 30. Fig.

The inner shaft 60 moves upward and downward with respect to the outer shaft 80 fixed to the lower cover 20 according to the amount of the balloon infuser and the inner shaft 60 is moved up and down by the upper connector holder 40 and the upper connector 50, The lifting / lowering portion 30 fixed to the lifting / lowering portion is moved up and down.

That is, the ascending / descending section 30 is raised and lowered corresponding to the amount of the contents, and therefore, the scale guide line 34 can indicate the amount of the content on the scale line 13.

The scale guide line (34) is located at one end of the ascending / descending section (30). Since the scale guide line 34 is linear, it can accurately indicate the amount of content printed on the scale line 13, which is also straight.

For this purpose, the ascending and descending portion 30 is preferably fixed to the upper shaft 60. To this end, the upper opening 31 of the ascending and descending portion 30 located above the ascending and descending portion 30 is radially provided with an upper connector holder The upper connector holder 40, the upper connector 50 and the upper shaft 60 are firmly fixed to each other without using an adhesive or the like by positioning the hooking jaw 32 and the upper connector holder supporting portion 33, do.

The structure of the ascending and descending portion upper opening 31, the upper connector holder catching jaw 32 and the upper connector holder supporting portion 33 is the same as the structure of the lower cover 20, the upper connector holder catching jaw 22, Is the same as the structure of the holder supporter 23, but is 180 degrees opposite to the installation direction (i.e., upside down).

Through this, the connector holder and the connector, which are the same parts, can be used both in the upper part and the lower part, so that the manufacturing cost can be lowered and the manufacturing convenience can be achieved.

In other words, the upper connector holder latching jaw 32 and the upper connector holder supporting portion 33 are the same as those of the lower connector holder latching jaw 22 and the lower connector holder supporting portion 23 shown in Fig. The upper surface of the ascending and descending portion 30 is rounded and the seating space 32b of the ascending and descending portion 30 is located on the lower surface of the lower cover 20 as compared with the lower surface of the lower cover 20 having a flat shape. It is not necessary to have a recessed shape (a shape protruding upward in FIG. 8) protruding to one side like the seating space 22b, and it may be a shape that is hollowed outwardly.

An upper connector holder seating portion 32a is located on the lower end of the upper connector holder retaining jaw 32 toward the inside. The upper connector retaining step 42 of the upper connector holder 40 is positioned on the upper side of the upper connector holder seating portion 32a when the upper connector holder 40 is coupled downward from the upper opening 31 of the ascending / So that the downward movement of the upper connector 40 relative to the ascending / descending section 30 is restricted.

On the other hand, when the upper connector holder 40 is coupled downward from the upper opening 31 of the ascending and descending portion, the ascending and descending portion supporting portion 43 is located at the lower end of the upper connector holder supporting portion 33. As a result, the upward movement of the upper connector 40 relative to the ascending / descending section 30 is restricted.

Due to such a structure, both the upward movement and the downward movement of the upper connector holder 40 relative to the lifting and lowering section 30 are restricted, so that they can be firmly fixed without using any additional member such as an adhesive .

Fig. 10 shows a top connector holder 40. Fig. As described above, the lower connector holder 100 has the same structure as the upper connector holder 40. However, as shown in FIG. 2, the installation direction of the balloon infuser according to the present invention is opposite.

The upper connector holder 40 is inserted into the upper opening 31 of the ascending and descending section 30 of the ascending and descending section 30.

An upper connector holder opening 41 is located in the center of the upper connector holder 40.

The upper connector retaining jaw 42 and the ascending and descending portion supporting portion 43 are positioned radially along the outer surface of the upper connector holder 40. It is preferable that the upper connector latching jaw 42 and the ascending / descending section supporting portion 43 are positioned one by one to face each other.

The outer surface of the upper connector engaging jaw 42 is vertical, and as shown in the right side view of FIG. 10, the inner surface of the upper connector engaging jaw 42 protrudes inward, and the inclined surface is inclined so that the radius decreases from the upper portion to the lower portion. The upper end surface of the inclined surface is stepped outward so that the upper connector holder fastening portion 52 of the upper connector 50 can be inserted inward as shown in Fig. That is, when the upper connector 50 is inserted from the lower side toward the upper side toward the upper connector holder 40, the upper connector holder fastening portion 52 moves along the inclined surface of the upper connector fastening protrusion 42 and is snapped inward . Thus, the movement of the upper connector 50 to the lower side relative to the upper connector holder 40 is restricted.

Meanwhile, in order to perform such a coupling, the upper connector engaging jaw 42 needs to be slightly moved at the time of engagement of the upper connector 50, so that the seating space 42a is located inside thereof.

At the lower end of the ascending / descending support portion 43, the ascending and descending portion seating portion 43a is positioned outward.

The ascending and descending portion supporting portion 43 restricts the upward movement of the upper connector holder 40 relative to the ascending and descending portion 30 as described above and restricts the upward movement of the upper connector 50 relative to the upper connector holder 40. [ Thereby restricting the upward movement.

4, when the upper connector holder 40 is inserted into the ascending / descending section 30, the ascending / descending section seating section 43a comes into contact with the lower end of the upper connector holder supporting section 33, 30 of the upper connector 50 and the upper connector 50 to the upper connector holder 40. When the upper connector 50 is inserted into the upper connector holder 40, Is positioned above the upper connector shoulder (53) of the upper connector holder (40) to limit upward movement of the upper connector (50) relative to the upper connector holder (40).

Fig. 11 shows the top connector 50. Fig. As described above, the lower connector 90 has the same structure as the upper connector 50. However, as shown in FIG. 2, the installation direction of the balloon infuser according to the present invention is opposite.

The upper connector 50 is inserted into the lower portion of the upper connector holder 40, and the upper connector opening 51 is located at the upper center, into which the inner shaft 60 is inserted.

The outer periphery forming the upper connector opening 51 can be divided into a first upper outer wall body 55, a second upper outer wall body 56 and a third upper outer wall body 57 as shown in FIG. The protrusion 58 is located. Each configuration is described in detail below with the coupling structure.

The upper connector holder fastening portion 52 is located on the upper outer periphery of the upper connector 50. The upper portion of the upper connector holder fastening portion 52 has an outwardly sloped shape so that the sloped surface of the upper connector fastener 42 meets and facilitates easier movement.

6, when the upper connector 50 is inserted from the lower side toward the upper side toward the upper connector holder 40, the upper connector holder fastening portion 52 moves along the inclined surface of the upper connector fastening protrusion 42 And then snapped inward. Thus, the movement of the upper connector 50 to the lower side relative to the upper connector holder 40 is restricted.

An upper connector shoulder portion 53 protruding outward at a predetermined distance is located on the lower outer circumferential surface of the upper connector 50. 4, the upper connector shoulder portion 53 is located below the ascending / descending portion supporting portion 43a, and restricts the upward movement of the upper connector 50 relative to the upper connector holder 40. As shown in Fig.

With such a structure, both the upward movement and the downward movement of the upper connector 50 relative to the upper connector holder 40 are restricted, so that they can be firmly fixed without using any additional member such as an adhesive .

Fig. 12 shows the inner shaft 60. Fig.

The lower portion of the inner shaft 60 is firmly fixed to the lifting and lowering portion 30 by the upper connector 50 and the upper connector holder 40. And is a component that ascends and descends the ascending / descending section 30 while ascending and descending in accordance with the amount of the contents in the balloon infuser.

A flexible expansion member 70 is firmly fixed between the upper portion of the inner shaft 60 and the upper connector 50.

The middle body 69 of the inner shaft 60 is guided by the sliding movement in the space in the outer shaft 80. For this purpose, it is preferable that the shape of the body 69 corresponds to the shape of the hollow portion 88 of the outer shaft 80, and in particular, one or more protrusions are preferably positioned for smooth guide. In Figs. 12 and 14, four protrusions and corresponding hollows 88 are shown, but any number or shape thereof is acceptable.

The first upper inner wall 65, the second upper inner wall 66 and the third upper inner wall 67 are located on the upper portion of the inner shaft 60. Due to the shape and configuration of the inner walls 65, 66 and 67, the rising or falling of the inner shaft 60 with respect to the ascending / descending section 30 is limited and firm fixing is achieved. Each configuration is described in detail below with the coupling structure.

A cylindrical hollow body 61 is located in the upper center of the inner shaft 60 and reaches the upper opening 31 of the ascending and descending section through the upper connector opening 51 and the upper connector holder opening 41.

The inner wall space 61a is located between the radially outer side of the cylindrical hollow body 61 and the first upper side wall 65. [

When the contents are injected into the balloon infuser, the inflation member 70, which will be described later, is inflated and the inner shaft 60 is raised from the outer shaft 80 by the pressure.

This causes the ascending and descending portion 30 fixed by the upper connector 50 and the upper connector holder 40 to rise together with the inner shaft 60 and the ascending and descending portion 30 ascends, So that the scale line 13 is referred to.

Figure 13 shows the expansion member (70).

Note that the shape of the expansion member 70 shown in Fig. 13 is a shape in which the contents are not poured, as shown in Fig. 3A, and can be deformed at any time according to the flexibility properties of the expansion member 70. [

3B and 3C, the upper and lower portions of the expansion member 70 are fixed by the inner shaft 60 and the outer shaft 80, respectively, so that the central portion can be expanded or contracted.

The expansion member 70 may be flexible, but by using silicone in one embodiment, it is possible to improve swelling and contractility and enhance hygiene.

Particularly, as will be described in the following description of the coupling structure, the expansion member 70 is positioned between the upper connector 50 and the inner shaft 60 so as to be hermetically sealed without adhesive, and similarly, the lower connector 90 and the outer shaft 80, so that the expansion member 70 is sealed and bonded without adhesive.

Fig. 14 shows the outer shaft 80. Fig.

The lower portion of the outer shaft 80 is fixed to the lower cover 20 by the lower connector 90 and the lower connector holder 100 and is particularly fastened to the lower cover 20, to be.

A flexible expansion member 70 is fixed between the lower portion of the outer shaft 80 and the lower connector 90.

The hollow portion 88 of the outer shaft 80 guides the inner shaft 60 to be raised and lowered as described above. For this purpose, the shape of the hollow portion 88 corresponds to the shape of the body 69 of the inner shaft 60.

An injection opening 81 is located in the lower center of the outer shaft 80. When the contents are injected through the injection opening 81, the injection opening 81 communicates with the hollow portion 88 so as to be inserted into the hollow portion 88 through the injection hole 82 having a smaller diameter inside thereof 3A to 3C and 5).

A pair of upper injection ports 83 and a lower injection port 84 are located on the outer surface of the hollow portion 88. The contents inside the hollow portion 88 are injected toward the expansion member 70 through the upper injection port 83 and the lower injection port 84 to expand the expansion member 70.

The upper injection port 83 is located at the center of the hollow portion 88 and the lower injection port 84 is positioned near the lower end of the hollow portion 88 to reduce the dead space.

The first lower inner wall 85, the second lower inner wall 86, and the third lower inner wall 87 are located below the outer shaft 80. Due to the shape and configuration of the inner walls 85, 86 and 87, the upward or downward movement of the outer shaft 80 with respect to the lower cover 20 is limited and firm fixing is achieved. Each configuration is described in detail below with the coupling structure.

On the radially outer side of the injection opening 81, an inner wall space 81a is located between the first lower inner walls 85.

3. Adhesive-free solid connection structure

It is preferable that the adhesive agent is not used as much as possible because of the nature of the medical instrument. However, as described above in the background, it is not easy to use an adhesive while maintaining the sealing of contents in a medical instrument having a complicated structure such as a balloon infuser. The present inventors have solved this problem by a structure as described below.

The manufacturer pushes the upper and lower end portions of the expansion member 70 surrounding the inner shaft 60 and the outer shaft 80 into the upper connector 50 and the lower connector 90 respectively and then pushes the upper connector holder 40 and / The inner parts are manufactured by combining the lower connector holder 100 with the upper connector 50 and the lower connector 90 without using a separate adhesive.

Meanwhile, the snap coupling method is described for convenience of manufacturing, but it is noted that a nut method using thread, for example, is also possible without using an adhesive.

Each of the connection structures will be described in detail with reference to FIGS. 4 to 6. FIG.

Fig. 4 is an enlarged cross-sectional view of the portion "A" in Fig. 3A, taken along the line A-A in Fig.

5 is an enlarged cross-sectional view of the portion "B" of Fig. 3B. 4 is a cross-sectional view taken along the line A-A in Fig. The coupling structure of the lower connector 90 is substantially the same as the coupling structure of the upper connector 50, but only the components unique to the outer connector 80 are shown.

Fig. 6 is an enlarged cross-sectional view of a portion radially shifted 90 degrees from the portion " A "in Fig. 3A, and is a cross-sectional view taken along the line C-C in Fig. FIGS. 3A to 3C are cross-sectional perspective views taken on line C-C of FIG. 10, and are not shown here.

The coupling structure of the upper connector 50 of Fig. 4 will be described.

The inner shaft 60, the expansion member 70, the upper connector 50, the upper connector holder 40, and the ascending / descending section 30 are coupled from the center to the outer side. Without these adhesives, both upward movement and downward movement with respect to each other are restricted.

On the outside of the inner shaft 60, the flexible expansion member 70 covers substantially the same height as the upper portion, and the upper connector 50 is located on the outer side of the expansion member 70 to a higher position.

The inner wall of the inner shaft 60 can be divided into a first upper inner wall 65, a second upper inner wall 66, and a third upper inner wall 67, as shown by dashed lines in FIG. Compared to the first upper inner wall 65 and the third upper inner wall 67, the second upper inner wall 66 is relatively inclined inward.

This shape can also be seen in the upper connector 50 outside the expansion member 70 and is substantially similar to the inclination of the first upper outer wall body 55, the second upper outer wall body 56 and the third upper outer wall body 57 .

As the inner walls 65, 66, 67 and the outer wall members 55, 56, 57 are made similar in degree of inclination and the flexible expanding member 70 is inserted therebetween, So that the contents can be sealed and a firm fixing can be achieved by the frictional force.

A protruding portion 58 is located below the third upper outer wall body 57. The projected height of the projection 58 is smaller than the thickness of the expansion member 70. Although the inner walls 65, 66 and 67 are correspondingly positioned at the positions corresponding to the outer wall bodies 55, 56 and 57, the corresponding shapes at the positions of the inner shaft 60 corresponding to the projections 58 none.

That is, the projection 58 presses the flexible expansion member 70, as shown by "70a", so that the expansion member 70 itself is fixed.

Meanwhile, the upper connector 50 and the upper connector holder 40 are also firmly fixed to the ascending / descending portion 30. As shown in FIGS. 10 and 11, the upper connector 50 and the upper connector holder 40 are provided with two pairs of structures, which are fixed by their interaction.

10, when the upper connector 50 is hooked on the ascending / descending portion seating portion 43a of the upper connector holder 40, the upper connector 50 is moved upward The upward movement of the upper connector holder 40 due to the ascending / descending portion seating portion 43a is restricted by the upper connector holder supporting portion 33 of the ascending and descending portion 30.

10, the upper connector 50 is located at a position where the upper connector holder engaging portion 52 is engaged with the upper connector engaging jaw 42 of the upper connector holder 40, And the movement of the upper connector holder 40 in the downward direction is limited because the upper connector engaging jaw 42 is caught by the upper connector holder seating portion 32a of the ascending and descending portion 30.

In this way, both the upward and downward movements are limited, and the upper connector 50, the upper connector holder 40, and the ascending / descending section 30 are firmly fixed without adhesive.

On the other hand, despite this robust fixation, there is an additional advantage that component assembly by the manufacturer can be facilitated.

As shown in Fig. 4, it is easy to insert the upper connector 50 upward from the lower side of the upper connector holder 40. Fig. It is also easy to insert the upper connector holder 40 upward from the lower side of the ascending and descending portion 30. [

6, when the upper connector 50 is inserted from below the upper connector holder 40, the inclined surface of the upper connector holder engaging portion 52 is brought into contact with the inclined surface of the upper connector engaging jaw 42 . The upper connector engaging jaw 42 pushed by the upper connector holder engaging jaw 52 is pulled outward by using the engaging jaw clearance space 42a so that the upper connector holder engaging jaw 52 And is snapped over the upper connector latching jaw 42. [

When the upper connector holder 40 is inserted from below the ascending / descending section 30, the upper connector holder 40 comes into contact with the inclined surface of the upper connector holder seating portion 32a. The upper connector holder seating portion 32a pushed by the upper connector holding jaw 42 is extended outward using the seating space 32b so that the upper connector retaining jaw 42 is moved upward And is snap-engaged beyond the connector holder seating portion 32a.

On the other hand, this coupling relationship and advantages can be applied to the outer shaft 80, the expansion member 70, the lower connector 90, the lower connector holder 100, and the lower cover 20 as well.

Figure 5 shows this.

The inner wall of the outer shaft 80 can be divided into a first lower inner wall 85, a second lower inner wall 86 and a third lower inner wall 87, . This shape can be confirmed as the first lower outer wall body 95, the second lower outer wall body 96, and the third lower outer wall body 97 in the lower connector 90 as well. The combination of this type makes it possible to securely fix it. A protruding portion 98 is located below the third lower outer wall body 97 to urge the flexible expandable member 70 as indicated by "70b".

The lower connector 90 is limited in its downward movement because the lower connector shoulder 93 is caught by the lower cover seat 103a of the lower connector holder 100, The upper portion 103a is caught by the lower connector holder supporting portion 103 of the lower cover 100 so that the upward movement is restricted.

It is also the same principle to restrict the movement of the lower connector 90 and the lower connector holder 100 to the lower side in the direction of C-C in Fig.

In this way, the movement of the upper and lower sides is both limited and firmly fixed.

It is also described above that the assembly of the parts by the manufacturer can be facilitated in spite of this firm fixation.

According to the above-described methods, it is easy to manufacture from the viewpoint of the manufacturer, and once it is completed, it can be firmly fixed and dismantled even though no adhesive or the like is used.

4. Dead space reduction effect

The upper injection port 83 is located at the center of the hollow portion 88 and the lower injection port 84 is positioned near the lower end of the hollow portion 88.

The injection ports 83 and 84 are formed in order to reduce the dead space.

The content of the inside of the expanding member 70 gradually decreases as the content inside the expanding member 70 flows out and is supplied to the outside. Due to the nature of the balloon infuser, when a small amount of content is left inside the expanding member 70, So that the dead space is formed without being leaked out to the outside.

Accordingly, the upper injection port 83 is positioned at the center, thereby receiving the maximum contraction force on the horizontal center line of the expansion member 70 to help out the contents, and the lower injection port 84 is positioned at the lower end, Without helping to deflect the direction, it helps to drain the sinking contents.

5. Description of another embodiment

Another embodiment of the present invention will be described with reference to Fig.

The embodiment shown in Fig. 15 is different from the above-described embodiment in that the coupling method of the upper connector holder 40 and the ascending / descending section 30 and the coupling method of the lower connector holder 100 and the lower cover 20 are different Do. In the drawings, different parts are denoted by different reference numerals.

In the above-described embodiment, there is a pair of the lower connector holder supporting portions 23 of the lower cover 20. In the embodiment shown in FIG. 15, the lower connector holder supporting portion 23 ' And a lower connector holder insertion groove 23a 'is located at the center of the lower connector holder insertion portion 23'.

A lower cover insertion protrusion 103a 'is provided at the center of the lower cover seating portion 103a of the lower connector 100 and inserted into the lower connector holder insertion groove 23a' to be tightly coupled.

Similarly to the upper connector holder 40 and the ascending and descending portion 30, the ascending and descending portion insertion projections 43a 'are located on the ascending and descending portion seating portions 43a of the upper connector holder 40, And inserted into the upper connector holder insertion groove.

As such a structure, a rigid coupling structure can be formed as compared with the above-described embodiment.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the present invention can be changed.

10: Upper cover
11:
13: Grid line
14:
15: Coupling groove
16: Finger groove
20: Lower cover
21: Lower opening
22: lower connector holder jaw
22a: Lower connector holder seating portion
22b: Clearance space
23: Lower connector holder support
23 ': Lower connector holder insertion portion
23a ': Lower connector holder insertion groove
24:
25: fastening projection
30:
31: Upper opening of the ascent /
32: upper connector holder jaw
32a: upper connector holder seating portion
32b: Clearance space
33: upper connector holder support
34: scale guide line
40: upper connector holder
41: upper connector holder opening
42: upper connector locking jaw
42a: Jaw chin space
43:
43a:
43a ': Upper and lower steel portion insertion projection
50: upper connector
51: upper connector opening
52: upper connector holder fastening portion
53: upper connector shoulder
55: first upper outer wall body
56: second upper outer wall body
57: Third upper side outer wall body
58:
60: Inner shaft
61: Cylindrical hollow body
61a: My wall space
65: first upper side wall
66: second upper side wall
67: Third upper side wall
69: Body
70: Expansion member
80: outer shaft
81: opening for injection
81a: Outer wall space
82: inlet
83: Lower inlet
84: Upper inlet
85: first lower outer wall body
86: second lower outer wall body
87: third lower outer wall body
88: hollow
90: Lower connector
93: lower connector shoulder
95: first lower inner wall
96: second lower inner wall
97: third lower inner wall
100: Lower connector holder
103: Lower cover support
103a: Lower cover seat portion
103a ': Lower cover insertion projection

Claims (8)

In the balloon infuser having the ascending / descending section 30,
The upper portion opening 31 of the ascending / descending portion is located at the center of the ascending and descending portion 30,
The upper connector holder 40 is snap-engaged with the upper opening 31 of the ascending /
The upper connector 50 is snap-engaged to the lower side of the upper connector holder 40,
An inner shaft 60 is positioned inside the upper connector 50 and a flexible expansion member 70 is positioned therebetween to seal and fix the upper connector 50 and the inner shaft 60,
A pair of upper connector holder engaging protrusions 32 and an upper connector holder supporting portion 33 are radially formed along the boundary in the ascending and descending portion upper opening 31. The upper connector holder 40 is radially The upper connector engaging jaw 42 and the ascending and descending portion supporting portion 43 are located,
An upper connector holder mounting portion 32a protruding inward is positioned at a lower end of the upper connector holder locking protrusion 32. A mounting portion 43a is formed at the lower end of the upstanding support portion 43, Lt; / RTI >
Balloon infuser.
The method according to claim 1,
An upper portion of the inner shaft 60 is engaged with the upper connector 50,
The shape of the inner walls 65, 66 and 67 of the inner shaft 60 corresponds to the shape of the outer wall bodies 55, 56 and 57 of the upper connector 50,
Wherein the expansion member (70) is located between the inner wall (65, 66, 67) and the outer wall (55, 56, 57)
Balloon infuser.
3. The method of claim 2,
Wherein one of the inner walls (66) of the inner walls (65, 66, 67) and one of the outer walls (56) corresponding thereto are positioned at an angle different from each other,
Balloon infuser.
3. The method of claim 2,
A protrusion 58 is located on one of the outer wall bodies 57 and the protrusion 58 urges the expanding member 70,
Balloon infuser.
delete The method according to claim 1,
The upper connector holder seating portion 32a is positioned below the upper connector retaining tab 42 to limit the movement of the upper connector holder 40 to the lower side and the ascending / And restricting the upward movement of the upper connector holder (40) by being positioned below the holder support portion (33)
Balloon infuser.
The method according to claim 1,
The upper connector 50 has an upper connector holder fastening part 52 protruding outwardly and an upper connector shoulder part 53 protruding outward is located at a lower end of the upper connector 50,
The upper connector locking protrusion 42 is positioned under the upper connector holder locking part 52 to limit the movement of the upper connector 50 to the lower side and the lower connector locking protrusion 42 is disposed below the upper connector 50, A shoulder 53 is positioned to restrict upward movement of the upper connector 50,
Balloon infuser.
The method according to claim 1,
The upper connector holder engaging protrusion 32 and the upper connector holder inserting portion are located radially along the boundary in the ascending and descending portion upper opening 31. The upper connector holder inserting portion is located in the upper connector holder inserting portion,
The upper connector holder 40 is provided with an upper connector engaging protrusion 42 and an ascending and descending portion supporting portion 43 radially along the outer periphery of the upper connector holder 40. The ascending and descending portion supporting protrusion 43 43a '
Wherein the ascending and descending portion insertion projections 43a 'are inserted into the upper connector holder insertion recesses,
Balloon infuser.

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