JP2018201727A - Liquid medicine injection tool for organism - Google Patents

Abstract

To provide a liquid medicine injection tool for organism which can obliquely spray a liquid medicine by jetting a gas and which can be easily produced.SOLUTION: A tissue adhesive application tool comprises: a nozzle; and a liquid medicine circulation path Y comprising a liquid medicine injection part which passes through a space 2s in the nozzle and to which a liquid medicine 10 is injected and a discharge pipe 12e from which the liquid medicine 10 is discharged. The nozzle has a gas injection part for injecting a gas into the space. the nozzle comprises a gas injection part 12f which is in the vicinity of the discharge pipe 12e, jets an air sending gas G filled in the space from the gas injection part, and sprays the liquid medicine 10 discharged from the discharge pipe 12e of the liquid medicine circulation path Y in a misty state. A jetting direction of the air sending gas G from the gas injection part 12f and a discharge direction of the liquid medicine 10 from the discharge pipe 12e obliquely cross in a destination where the liquid medicine 10 is discharged from the discharge pipe 12e.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a biomedical solution injection tool for spraying a chemical solution onto an affected area of a living body, and more particularly to a biomedical solution injection device for spraying a chemical solution obliquely with respect to the axial direction of a nozzle.

In treatment or therapy in a living body, it is a common practice to introduce a drug solution into a body cavity by passing a trocar through a hole formed in the abdomen or the like and further passing a nozzle through the trocar.
Patent Document 1 discloses a technique that enables a chemical solution to be ejected in a wide range by a nozzle even when the nozzle is in a state where the arrangement is restricted by a trocar.

  The biomedical liquid injection tool described in Patent Document 1 (described as a biotissue adhesive application tool in the same document) has a plurality of medicinal liquids and a gas that mixes these medicinal liquids as the axis of the nozzle. It is possible to spray obliquely with respect to the direction. Thus, if it is the structure which sprays a chemical | medical solution diagonally with respect to the axial center direction of a nozzle, it will become possible to spray a chemical | medical solution in a wide range by rotating a nozzle around an axial center.

JP 2013-74888 A

In the biomedical liquid injection device disclosed in the same document, the distal ends of both the gas ejection path and the chemical flow path are formed to be inclined with respect to the axial direction of the nozzle, so that the chemical liquid and It was to spray gas. In particular, since there is a complicated structure in which the gas ejection path surrounds the chemical flow path and both are slanted with respect to the axial direction of the nozzle, its manufacture is difficult.
For this reason, there has been a demand for a new structure capable of spraying a chemical solution obliquely with respect to the axial direction of the nozzle, such as the structure of the biomedical solution injecting device described in the document.

  This invention is made | formed in view of the said subject, and makes it a subject to provide the chemical | medical solution injection tool for biological bodies which can spray a chemical | medical solution diagonally by the ejection of gas, and is easy to manufacture.

  The biomedical liquid injection tool of the present invention includes a nozzle having a space inside, a chemical liquid injection part provided in the nozzle passing through the space inside the nozzle, and a chemical liquid discharge part provided at the tip of the nozzle A chemical solution flow passage for allowing a chemical solution to flow therethrough, wherein the nozzle has a gas injection part for filling the space with a gas, and is in the vicinity of the chemical solution discharge part, and the gas injection part A gas jetting part for jetting the gas filled in the space and spraying the chemical liquid discharged from the chemical liquid discharge part of the chemical liquid flow passage in the form of a mist, the gas jetting part The ejection direction of the gas has a larger angle than the discharge direction of the chemical solution discharge unit with respect to the axial direction of the nozzle, and the jet direction of the gas from the gas discharge unit and the discharge direction of the chemical solution discharge unit The discharge direction of the chemical liquid means that the chemical liquid is Characterized in that it intersects diagonally the previously discharged from the serial solution discharge unit.

  ADVANTAGE OF THE INVENTION According to this invention, a chemical | medical solution can be sprayed diagonally and the biological-medical-solution injection tool with easy manufacture can be provided.

It is a perspective view which shows the biological tissue adhesive application tool which concerns on this embodiment. It is an expansion perspective view which shows the head in II part of FIG. It is a front view of a head. It is sectional drawing which shows the IV-IV cross section of FIG. It is sectional drawing which shows the VV cross section of FIG. It is a front view of the head concerning the 1st modification. It is a front view of the head concerning the 2nd modification. It is a front view of the head concerning the 3rd modification.

Hereinafter, an embodiment of a biomedical solution injection device of the present invention will be described based on the drawings.
The embodiment described below is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. That is, the shape, dimensions, arrangement, and the like of the members described below can be changed and improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof.
Moreover, in all drawings, the same code | symbol is attached | subjected to the same component, and the overlapping description is abbreviate | omitted suitably. Further, in the following, the side from which the drug solution in the biomedical solution injection device is discharged is referred to as the front side or the distal side, and the opposite side is referred to as the rear side or the proximal side.

<About the overall configuration>
An overall configuration of a biological tissue adhesive application tool 1 as a biological drug injection tool of the present invention will be described with reference mainly to FIGS. 1 and 2. FIG. 1 is a perspective view showing a biological tissue adhesive applicator 1 according to the present embodiment, and FIG. 2 is an enlarged perspective view showing a head 12 in the II part of FIG.

  The biomedical solution injection tool (biological tissue adhesive application tool 1) according to the present invention is a tool for injecting (applying / spraying) a chemical solution into the body. The chemical solution 10 (see FIG. 5) to be injected by the biological drug injection device according to the present invention may be one type as described later, and sprayed by the biological tissue adhesive application tool 1 according to the present embodiment. Two or more types may be sufficient like the chemical | medical solution 10 to be performed. The biological tissue adhesive application tool 1 has a function of spraying and mixing a plurality of later-described chemical liquids 10 and applying them to an organ or the like in the living body as an adhesive.

  The biological tissue adhesive applicator 1 includes a nozzle X having a space 2s inside, and a chemical solution flow path Y through which the chemical solution 10 flows through the space 2s inside the nozzle X. The chemical liquid flow path Y will be described in detail later, but a chemical liquid injection part (syringe mounting port 2d) into which the chemical liquid 10 is injected, and chemical liquid distribution pipes 3 and 4 (see FIGS. 4 and 5) through which the chemical liquid 10 flows. The flow path has a chemical solution discharge portion (discharge pipe 12e) through which the chemical solution 10 is discharged, and distributes the chemical solution 10.

The nozzle X communicates with the nozzle body 2, the space 2 s inside the nozzle body 2 and extends from the tip side of the nozzle body 2, and will be described later attached to the tip of the extension 11. And a head 12.
The nozzle body 2 is a first member according to the present invention in which a chemical liquid injection part (syringe mounting port 2d) is provided and filled with an air supply gas G (see FIG. 5).
The head 12 includes a spray end piece 12d as a second member in which a discharge pipe 12e and a gas ejection portion 12f are integrally formed.
The nozzle X is provided with a gas injection part 2g for injecting an air supply gas G (see FIG. 5) into the internal space 2s. Further, as shown in FIG. 2, the head 12 of the nozzle X is provided with a gas ejection portion 12f near the chemical solution discharge portion (discharge pipe 12e) for spraying the chemical solution 10 in a mist form.
As shown in FIG. 1, the nozzle body 2 is formed with a portion protruding obliquely upward and rearward, and the gas injection part 2g is formed at the protruding tip.
As described above, when the gas injection part 2g is provided at a portion protruding above the nozzle body 2, the operation of attaching the air filter 9 to the gas injection part 2g and the connection of the air supply tube 31 via the air filter 9 are performed. This is preferable because the work to be performed becomes easy.
However, the present invention is not limited to such a configuration, and the gas injection section only needs to be able to inject the air supply gas G into the space 2 s inside the nozzle body 2, and is formed at the lower part or the side part of the nozzle body 2. Also good. Moreover, it is not necessarily limited to what is formed in the edge part of the site | part formed protrudingly.
The gas ejection part 12f, which will be described in detail later, injects an air supply gas G filled in the internal space 2s from the gas injection part 2g and discharges it from the chemical liquid discharge part (discharge pipe 12e) in the chemical liquid flow path Y. The chemical solution 10 to be sprayed and mixed in a mist form.

  The living tissue adhesive applicator 1 is connected to an air supply tube 31 that introduces an air supply gas G for spraying the drug solution 10 into the nozzle body 2. The air supply tube 31 is connected to a regulator 30 that adjusts the amount of the air supply gas G, and is connected to the nozzle body 2 via the air filter 9. Specifically, the air supply tube 31 is connected to the regulator 30 by a connector 31a provided on the proximal end side, and is connected to the connection port 9a of the air filter 9 by a connector 31b provided on the distal end side. . By passing the air supply gas G supplied from the regulator 30 through the air filter 9, dust and germs are sterilized from the air supply gas G. For this reason, the air supply gas G that has passed through the air filter 9 is suitable for hygiene as a gas to be ejected into the living body.

Note that the air filter 9 may be disposed not near the nozzle body 2 but near the regulator 30. In this way, since the number of members around the biological tissue adhesive application tool 1 is reduced, the operability of the biological tissue adhesive application tool 1 can be improved. Specifically, when the spray direction of the chemical solution 10 is changed by the operation of rotating the nozzle X, it is possible to suppress the air filter 9 from interfering with the operation.
The air supply gas G is introduced and filled from the regulator 30 into the space 2s inside the nozzle X (nozzle body 2) through the air supply tube 31, the air filter 9, and the gas injection part 2g.

  The nozzle body 2 is provided with two plungers 7 and two syringes 17 for introducing different chemicals into the nozzle body 2 through the syringe mounting port 2d. Specifically, two portions project rearward from the end portions on both sides of the rear surface of the nozzle body 2, and a syringe mounting port 2d as a chemical solution injection portion is formed at the rear ends of these portions. Yes. A syringe 17 is connected to each of the two syringe mounting ports 2d. When the plunger 7 is pushed into the syringe 17, the chemical solution filled in each of the two syringes 17 passes through later-described chemical solution distribution pipes 3 and 4 in the nozzle body 2 through the syringe mounting port 2 d. Become.

  The biological tissue adhesive applicator 1 also includes a plunger holder 8 for simultaneously pushing out the two plungers 7 to the syringe 17. The plunger holder 8 is formed in such a size that it can come into contact with the proximal end sides of the two plungers 7.

  The extension 11 provided in the nozzle X is for securing a length for disposing the head 12 attached to the tip of the extension 11 in the body cavity. The biological tissue adhesive application tool 1 is used when performing an operation using a thoracoscope, for example. For example, when performing an operation by EAS (endoscope assisted surgery) through a trocar (not shown), it is necessary to apply the drug solution 10 at a point where the trocar is inserted. In this case, since the nozzle X includes the extension portion 11, the nozzle X is lengthened in the axial direction, and the reachable position of the head 12, which is a portion to spray the chemical liquid, is extended according to the application position of the chemical liquid 10. be able to.

A line 11c is formed in the upper portion of the extension portion 11, in other words, in the direction perpendicular to the axial direction of the nozzle X, on the side opposite to the direction of injection of the air supply gas G (downward). The line 11c is formed with a predetermined width, and extends in the axial center direction of the nozzle X.
The line 11c formed in this way is, for example, when the biological tissue adhesive applicator 1 is used in a thoracoscopic operation, the air supply gas G is sprayed in the opposite direction of the line 11c, that is, the spray of the chemical solution 10 is performed. It functions as a sign to confirm the direction of the.

<About the configuration around the head>
Next, the head 12 and the configuration around the head 12 will be described with reference to FIGS. 3 to 5 in addition to FIGS. 3 is a front view of the head 12, FIG. 4 is a cross-sectional view showing the IV-IV cross section of FIG. 3, and FIG. 5 is a cross-sectional view showing the VV cross section of FIG.
The chemical liquid flow path Y includes a chemical liquid discharge section (discharge pipe 12e) through which the chemical liquid 10 is discharged through the internal space 2s of each of the nozzle body 2, the extension 11 and the head 12 which are part of the nozzle X.
The head 12 is provided with a discharge pipe 12e having a chemical liquid discharge port 12g and a gas ejection portion 12f.
Specifically, the head 12 includes a head main body 12b formed in a cylindrical shape, and a spray end piece 12d having a discharge pipe 12e and a gas ejection portion 12f attached to the distal end side of the head main body 12b. ing.

A fitting portion 12 h that fits the tip of the extension portion 11 is formed at the rear end portion of the head main body 12 b. The fitting portion 12 h has an outer surface having a smaller diameter than other portions of the head main body 12 b and is fitted in a state where the outer surface faces the inner surface of the extension portion 11.
As shown in FIGS. 4 and 5, the inner surface 12c on the distal end side of the head main body 12b is formed in a tapered shape so as to taper toward the proximal side. By being formed in this way, it is possible to hold the gas supply gas G more distally than the proximal side so that the gas supply gas G can be continuously ejected from the gas ejection part 12f described later. It becomes.
The head 12 includes a flange portion 12i provided at a portion opposite to the portion where the discharge pipe 12e is provided, with the gas ejection portion 12f interposed therebetween at the tip portion thereof. The detail of the collar part 12i is mentioned later.

The spray end piece 12d is constituted by an end piece main body 12j formed in a disc shape, and two discharge pipes 12e formed integrally with the end piece main body 12j and extending perpendicularly to the end piece main body 12j. Yes.
The end piece main body 12j is fitted to the inner surface of the head main body 12b on the front end side, and a gas ejection portion 12f that is a through hole is formed above each of the two discharge pipes 12e.

The chemical liquid 10 is discharged on the extension along the extending direction of the discharge pipe 12e as the chemical liquid discharge portion. In other words, the discharge pipe 12 e extends along the discharge direction of the chemical solution 10. Hereinafter, the discharge direction is a vector directed to the distal side with respect to the discharge pipe 12e.
The gas ejection part 12f extends to the discharge destination of the chemical solution 10 by the discharge pipe 12e. Specifically, the gas ejection part 12f is directed toward the distal side so as to intersect the axial center direction of the nozzle X (the thickness direction of the end piece body 12j) in the end piece body 12j of the spray end piece 12d. It extends diagonally downward.
Since each of the discharge pipe 12e and the gas ejection part 12f extends in such a direction, depending on the shape of the discharge pipe 12e and the gas ejection part 12f, the ejection direction of the chemical solution 10 and the ejection direction of the air supply gas G Can be oriented. Hereinafter, the ejection direction is a vector directed to the distal side with respect to the gas ejection portion 12f.
The tip ends of the chemical liquid circulation pipes 3 and 4 are connected to the base end of the discharge pipe 12e, and the chemical liquid 10 passing through the two chemical liquid circulation pipes 3 and 4 is introduced into the two discharge pipes 12e. Will be.

The chemical liquid distribution pipes 3 and 4 are used to distribute two types of chemical liquids to be mixed. And the chemical | medical solution distribution pipes 3 and 4 are members which form the chemical | medical solution flow channel | path Y, and are arrange | positioned so that it may pass in the space 2s inside the nozzle main body 2 and the extension part 11 mentioned later.
The chemical liquid flow path Y includes a plurality of flow paths related to the flow path including the chemical liquid flow pipe 3 as the first chemical liquid flow path Y1 and the flow path including the chemical liquid flow pipe 4 as the second chemical liquid flow path Y2.
In the present embodiment, one of the chemical solution distribution tubes 3 and 4 is used to distribute a chemical solution containing fibrinogen or the like. The other of the chemical solution distribution pipes 3 and 4 contains thrombin or the like, and acts on fibrinogen or the like to distribute a chemical solution for functioning as an adhesive. The chemical solution discharge port 12g is an open end of the discharge pipe 12e, and is discharged from the syringe 17 by the plunger 7 and injected from the syringe mounting port 2d to discharge the chemical solution 10 (see FIG. 5) that has passed through the chemical solution distribution tubes 3 and 4. It is a part to do.

The gas ejection part 12f is provided in the vicinity of the chemical liquid discharge port 12g, and a part for ejecting the gas supply gas G filled in the space 2s inside the nozzle X from the gas injection part 2g at the tip part of the head 12. It is.
Two gas ejection portions 12f are formed, and the front end openings of the two gas ejection portions 12f are formed along the discharge pipe 12e in a front view. Specifically, the front end opening of the gas ejection part 12f is formed in an arc shape and is formed along the discharge pipe 12e. According to the gas ejection part 12f formed in this way, the chemical solution 10 can be effectively mixed while suppressing the ejection region of the gas supply gas G from expanding. Specifically, the gas supply gas G ejected from the gas ejection part 12f can change the application direction of the chemical liquid 10 so as to wrap the chemical liquid 10 discharged from the discharge pipe 12e.

  In front view, the tip openings of the two gas ejection portions 12f are formed in an arc shape having a central angle of 20 ° to 50 ° with the centers c1 and c2 of the two discharge pipes 12e being concentric. . Thus, if the gas ejection part 12f is formed, the range of the gas ejection part 12f will become wide according to the distance from the discharge pipe 12e. Therefore, the gas supply gas G ejected from the gas ejection part 12f can suitably wrap the chemical solution 10 discharged from the discharge pipe 12e so as not to leak, and the application direction of the chemical solution 10 can be changed.

The gas ejection part 12f is formed in a noncircular shape in a part in the circumferential direction around the discharge pipe 12e when the front end opening of the gas ejection part 12f is viewed in front. Since the gas ejection part 12f is formed in this manner, the gas supply gas G is ejected from the gas ejection part 12f in a partial cylindrical shape.
Further, since the gas ejection part 12f is formed in this way, the discharge pipe 12e and the gas ejection part 12f can be integrally formed with the spray end piece 12d, unlike the conventional gas ejection part formed in an annular shape. Become. For this reason, the manufacturing efficiency of the biological tissue adhesive applicator 1 is increased.
The gas ejection part 12f is formed at a position away from the discharge pipe 12e when the front end opening of the gas ejection part 12f is viewed from the front. Since the gas ejection part 12f is formed in this way, the gas supply gas G ejected obliquely downward from the gas ejection part 12f toward the distal side is ejected further to the distal side than the gas ejection part 12f. It can spray suitably with respect to the chemical | medical solution 10 discharged from the pipe 12e.

As shown in FIG. 5, the angle formed between the ejection direction of the gas ejection portion 12f and the axial center direction of the nozzle X (strictly, the head 12) is the discharge direction and the axis of the chemical solution 10 of the chemical solution ejection portion (discharge pipe 12e). It is larger than the angle formed by the mind direction. Here, the axial direction serving as a reference for the angle refers to a vector directed to the distal side. In addition, the discharge direction of the chemical solution 10 according to the present embodiment is a direction parallel to the axial direction of the head 12.
And the ejection direction of the gas supply gas G from the gas ejection part 12f and the discharge direction of the chemical liquid 10 from the chemical liquid discharge part (discharge pipe 12e) are the points where the chemical liquid 10 is discharged from the chemical liquid discharge part (discharge pipe 12e). Crossing diagonally. Here, the ejection direction means the flow of the gas supply gas G, and the discharge direction means the flow of the chemical solution 10 itself. And that the jetting direction and the discharge direction intersect diagonally means that the gas supply gas G and the chemical 10 intersect diagonally. Further, the “discharging destination” is a concept including a position very close to the chemical liquid discharge port 12g of the discharge pipe 12e as described later. As shown in FIG. 5, the chemical solution 10 is sprayed along the air supply gas G after crossing the air supply gas G obliquely.

According to the gas ejection part 12f that ejects the gas supply gas G in such an ejection direction, the medicinal liquid 10 can be suitably applied to the affected part by changing the application direction of the medicinal liquid 10 while making the medicinal liquid 10 mist. it can. Of the parts forming the chemical liquid flow path Y, at least a part in the vicinity of the chemical liquid discharge port 12g (discharge pipe 12e according to the present embodiment) can have a linear structure, thereby facilitating the formation of the chemical liquid flow path Y. be able to. As a result, the manufacturing efficiency of the biological tissue adhesive applicator 1 can be increased.
The discharge pipe 12e according to the present embodiment is a separate body from the chemical liquid circulation pipes 3 and 4, but the present invention is not limited to such a configuration, and may be integrally formed. Good. Further, it is only necessary that the chemical liquid 10 can be sprayed in a direction intersecting the axial center direction of the nozzle X, and the extending direction of the discharge pipe 12e, which is the discharging direction of the chemical liquid 10, may not necessarily be parallel to the axial center direction of the nozzle X. .

The distal end surface 12k of the discharge pipe 12e has an elliptical shape as shown in FIG. 2, and is formed along the direction in which the gas supply gas G is ejected from the gas ejection part 12f (in parallel with the ejection direction). Specifically, the front end surface 12k according to the present embodiment extends obliquely with respect to the axial direction of the nozzle X and includes a straight line parallel to the ejection direction of the gas supply gas G in the width direction of the nozzle X. It is an extended surface. For example, the front end surface 12k is formed by cutting (cutting) the front end portion of a cylindrical portion that is the base of the discharge pipe 12e obliquely.
Thus, the discharge pipe 12e having the tip surface 12k formed along the ejection direction of the gas supply gas G has the chemical solution 10 aligned along the inner surface of the discharge pipe 12e until the chemical solution 10 reaches the gas supply gas G. Can be guided linearly.
And the chemical | medical solution 10 will be sprayed with the air supply gas G in the very vicinity of the chemical | medical solution discharge outlet 12g of the discharge pipe 12e.
Therefore, according to the discharge pipe 12e, for example, the chemical liquid 10 can be prevented from flowing out in a direction away from the air supply gas G injected before reaching the chemical liquid discharge port 12g due to its own weight. For this reason, the chemical | medical solution 10 will be sprayed uniformly by the air supply gas G. FIG.

Thus, although it is suitable if the front end surface 12k of the discharge pipe 12e is formed in parallel with the injection direction of the gas supply gas G, it should be along the injection direction of the gas supply gas G from the gas injection part 12f. The same effect can be achieved. Therefore, the front end surface of the chemical solution discharge section according to the present invention may be formed to be slightly inclined with respect to the direction of the air supply gas G.
Specifically, the gas ejection part which is a through-hole formed in the end piece main body 12j as shown in FIG. 5 in which the ejection direction of the gas supply gas G is a straight line parallel to the extending direction of the gas ejection part 12f. A virtual straight line connecting the base end side upper edge 12fa and the front end side lower edge 12fb of 12f is used. In this case, it is preferable that the distal end surface 12k of the discharge pipe 12e is formed with an inclination within a range of an angle R formed by a straight line in the G ejection direction and a virtual straight line.
Furthermore, if the chemical liquid 10 does not flow down in a direction away from the air supply gas G injected due to the viscosity of the chemical liquid 10 and the chemical liquid 10 can be sprayed uniformly by the air supply gas G, the tip surface of the chemical liquid discharge portion is positioned at the nozzle X. It may be a tip surface perpendicular to the axial direction. If it is such a structure, it can form easily, without carrying out the additional process of the front-end | tip part of a chemical | medical solution discharge part.

The end portion on the center side of the gas ejection portion 12f is formed so as to approach a portion on the inner side of the both ends in the line segment s1 when the front end opening of the gas ejection portion 12f is viewed in front. Here, the line segment s1 connects the center c1 of the chemical liquid discharge port 12g of the first chemical liquid flow path Y1 and the center c2 of the chemical liquid discharge port 12g of the second chemical liquid flow path Y2.
In this way, part of the gas ejection part 12f is formed so as to be closer to the inner part than both ends of the line segment s1, so that the air supply gas G is ejected from the gas ejection part 12f like an air curtain. Will be. Therefore, after the chemical liquid 10 discharged from the respective chemical liquid discharge ports 12g of the first chemical liquid flow path Y1 and the second chemical liquid flow path Y2 is discharged from the gas supply gas G ejected from the gas ejection portion 12f. It is possible to avoid mixing at an early stage. For this reason, when the chemical solution 10 that functions as an adhesive when mixed is used, the chemical solution 10 discharged from both the chemical solution discharge ports 12g is mixed and solidified in the vicinity of the chemical solution discharge port 12g, causing clogging. This can be suppressed.

The gas ejection part 12f is viewed in a direction crossing the alignment direction of a plurality of (two in the present embodiment) first chemical liquid flow path Y1 and the second chemical liquid flow path Y2 when the front end opening of the discharge pipe 12e is viewed in front. Insufflation gas G is injected. The air supply gas G injected in this way sprays and mixes the liquid chemicals 10 discharged from the respective discharge pipes 12e in the first chemical liquid flow path Y1 and the second chemical liquid flow path Y2.
Note that the biological tissue adhesive application tool 1 according to the present embodiment includes two first chemical liquid flow passages Y1 formed by two chemical liquid flow pipes 3 and 4 and a discharge pipe 12e continuous to each of these. A second chemical flow path Y2 is provided. However, the biomedical liquid injection device according to the present invention is not limited to such a configuration, and may further include a plurality of chemical liquid flow paths Y.

The collar portion 12i is provided so as to cover the tip of the discharge pipe 12e, and is formed so as to protrude more distally than the tip of the discharge pipe 12e with reference to the discharge direction of the chemical solution 10. In particular, the collar portion 12i is formed in a gentle pointed shape. Specifically, in the collar portion 12i, the central portion in the width direction (the direction parallel to the direction in which the chemical solution discharge ports 12g are arranged in the present embodiment) protrudes most distally, and as it goes to both sides in the width direction. The protruding amount from the spray end piece 12d is formed to be small.
The flange portion 12i formed in this manner functions as a partition that separates the gas ejection portion 12f and the chemical solution discharge port 12g from the surrounding environment. For this reason, the collar part 12i can suppress the influence from the surrounding environment of the insufflation gas G ejected from the gas ejection part 12f, and can maintain the rectifying property of the spray of the chemical solution 10. Moreover, according to the collar part 12i, it can suppress that clogging arises in the gas ejection part 12f and the chemical | medical solution discharge port 12g by the bodily fluid etc. which adhere when the discharge pipe 12e from which the chemical | medical solution 10 is discharged contacts an organ etc. can be suppressed. Furthermore, since the collar portion 12i is formed in a pointed shape, it is easy to insert the nozzle X from the head 12 into a trocar (not shown).

  In the biological tissue adhesive applicator 1 according to the above embodiment, since the chemical solution 10 can be sprayed obliquely with respect to the axial center direction of the nozzle X, the spray region of the chemical solution 10 is rotated by rotating the nozzle X. It is possible to change. In addition, by adjusting the supply speed of the air supply gas G by the regulator 30, the spray angle of the chemical liquid 10 sprayed along the direction of the injection of the air supply gas G can also be adjusted.

(First modification)
Next, the head 42 according to the first modification will be described with reference mainly to FIG. FIG. 6 is a front view of the head 42 according to the first modification.

As shown in FIG. 6, the gas ejection portions 42 f formed at two locations on the end piece main body 42 j of the spray end piece 42 d provided on the head 42 according to the first modification are formed in a U-shape when viewed from the front. ing. The two gas ejection portions 42f are formed so that the open side faces the two discharge pipes 12e. In other words, both ends of the gas ejection part 42f extend downward so as to wrap the chemical liquid 10 discharged from the chemical liquid discharge port 12g of the discharge pipe 12e.
Even the U-shaped gas ejection portion 42f of the head 42 according to this modification can achieve the same effects as the arc-shaped gas ejection portion 12f of the head 12 according to the above embodiment. Specifically, the chemical liquid 10 can be mixed effectively while the head 42 also suppresses the expansion of the jet region of the gas supply gas G.

Further, both end portions of the gas ejection portion 42f extend downward to connect the center c1 of the chemical solution discharge port 12g of the first chemical solution flow passage Y1 and the center c2 of the chemical solution discharge port 12g of the second chemical solution flow passage Y2. The line segment s1 is formed so as to be closer to the inner part than both ends.
For this reason, the head 42 which has the gas ejection part 42f can have an effect similar to the head 12 which concerns on the said embodiment.
Specifically, the gas jetting section indicates that the chemical liquid 10 discharged from the respective chemical liquid discharge ports 12g of the first chemical liquid flow path Y1 and the second chemical liquid flow path Y2 is mixed at an early stage after being discharged from these. This can be avoided by the gas supply gas G ejected from both end portions (proximity portions) of 42f.

(Second modification)
Next, a head 52 according to a second modification will be described with reference mainly to FIG. FIG. 7 is a front view of the head 52 according to the second modification.
As shown in FIG. 7, the gas ejection part 52f formed in one place in the end piece main body 52j of the spray end piece 52d provided in the head 52 according to the second modification is formed in a T-shape when viewed from the front. Yes. In other words, the central part of the gas ejection part 52f extends downward, and connects the center c1 of the chemical liquid outlet 12g of the first chemical liquid flow path Y1 and the center c2 of the chemical liquid outlet 12g of the second chemical liquid flow path Y2. It forms so that it may approach the site | part inside rather than the both ends in the connecting line segment s1.
For this reason, the head 52 can have the same effects as the head 12 according to the embodiment and the head 42 according to the first modification. Specifically, the gas jetting indicates that the chemical liquid 10 discharged from the respective chemical liquid discharge ports 12g of the first chemical liquid flow path Y1 and the second chemical liquid flow path Y2 is mixed at an early stage after being discharged from these. This can be avoided by the air supply gas G ejected from the center part (proximal part) of the part 52f.
In particular, since the gas ejection portion 52f is formed at only one location, the head 52 can be easily manufactured.
In addition, when viewed from the front, both end portions of the gas ejection portion 52f may extend downward similarly to the central portion of the gas ejection portion 52f. If it does in this way, like the gas ejection part 12f and the gas ejection part 42f, the chemical | medical solution 10 can be mixed effectively, suppressing that the ejection area | region of the supply gas G expands.

(Third Modification)
A head 62 according to a third modification will be described with reference mainly to FIG. FIG. 8 is a front view of the head 62 according to the third modification.
In the biological tissue adhesive applicator 1 according to the above-described embodiment, in order to spray and mix two types of chemical solutions 10 that are mixed and function as adhesives, the plunger 7, the syringe 17, the chemical solution distribution tubes 3, 4, and the discharge pipe 12e etc. were provided.
A biomedical solution injection tool including the head 62 according to the third modification sprays one type of drug solution, and includes only one member that forms a pair of the above-described biotissue adhesive applicator 1. It is.
In the end piece main body 62j provided in the spray end piece 62d in the head 62, an arc-shaped gas ejection portion 62f is formed only in one place. The gas ejection part 62f is formed along the outer periphery of one discharge pipe 12e in a front view.
Thus, this invention is not limited to what concerns on a biological tissue adhesive application tool, The biological fluid injection device which sprays the chemical | medical solution 10 with the one discharge pipe 12e may be sufficient. Even in such a biomedical liquid injector, as with the biological tissue adhesive applicator 1 according to the above embodiment, the gas supply gas G is ejected from the gas ejection part 62f in an oblique direction with respect to the axial center direction of the nozzle X. It can be. More specifically, even if the discharge pipe 12e is formed along the axial center direction of the nozzle X, the chemical solution 10 can be sprayed obliquely with respect to the axial center direction of the nozzle X.

The above embodiment includes the following technical idea.
(1) a nozzle having a space inside;
A chemical solution flow path through which the chemical solution is circulated through the space inside the nozzle and having a chemical solution injection portion into which the chemical solution is injected and a chemical solution discharge portion from which the chemical solution is discharged;
In the nozzle,
A gas injection part for injecting gas into the space;
A gas jet that is in the vicinity of the chemical solution discharge unit, injects the gas filled in the space from the gas injection unit, and sprays the chemical solution discharged from the chemical solution discharge unit of the chemical solution flow passage in a mist form Are provided, and
The angle formed by the ejection direction of the gas ejection part and the axial direction of the nozzle is larger than the angle formed by the ejection direction of the chemical liquid ejection part and the axial direction of the nozzle,
The living body characterized in that the ejection direction of the gas from the gas ejection section and the ejection direction of the chemical liquid from the chemical liquid ejection section obliquely intersect each other at the point where the chemical liquid is ejected from the chemical liquid ejection section. Chemical solution injection tool.
(2) A plurality of the chemical liquid flow paths are provided,
The gas jetting unit is configured to spray the gas that is discharged from each of the chemical solution discharge portions in the plurality of chemical solution flow passages in a mist, and when the front end opening of the chemical solution discharge portion is viewed in front, The biological-medical-solution injecting device according to (1), wherein the medical-solution injecting device is ejected in a direction that intersects a direction in which the plurality of chemical flow paths are arranged.
(3) The chemical solution discharge part extends along the discharge direction of the chemical solution,
The biological solution injection tool according to (1) or (2), wherein the gas ejection unit extends toward the discharge destination of the chemical solution by the chemical solution discharge unit.
(4) The gas ejection part according to any one of (1) to (3), wherein the gas ejection part is formed at a position away from the chemical liquid ejection part when the front end opening of the gas ejection part is viewed in front. Biomedical solution injection tool.
(5) The chemical liquid flow path includes a first chemical liquid flow path and a second chemical liquid flow path,
At least a part of the gas jetting part is formed such that the center of the chemical liquid discharge part of the first chemical liquid flow path and the center of the chemical liquid discharge part of the second chemical liquid flow path are viewed from the front end opening of the gas jet part. The biomedical solution injection device according to any one of (1) to (4), which is formed so as to be closer to a portion on the inner side than both ends in a line segment connecting the two.
(6) The gas ejection part is formed in a non-circular shape in a part of a circumferential direction centering on the chemical solution discharge part when the front end opening of the gas ejection part is seen in front.
The nozzle includes any one of (1) to (5) including a first member provided with the chemical solution injection portion and a second member integrally formed with the chemical solution discharge portion and the gas ejection portion. The biomedical solution infusion device described in 1.
(7) Further comprising a collar portion provided at a portion opposite to the portion where the chemical solution discharge portion is provided across the gas ejection portion,
The biomedical solution according to any one of (1) to (6), wherein the collar portion is formed so as to protrude further to the distal side than the tip of the chemical solution discharge portion with reference to the discharge direction of the chemical solution. Injection tool.
(8) The biomedical solution according to any one of (1) to (7), wherein a front end opening of the gas ejection portion is formed in an arc shape and is formed along the chemical solution discharge portion. Injection tool.
(9) The biomedical liquid injection tool according to (8), wherein the distal end opening of the gas ejection part is formed in an arc shape having a central angle of 20 ° to 50 ° with the center of the chemical liquid discharge part being concentric.
(10) The biomedical liquid injection device according to any one of (1) to (9), wherein a distal end surface of the chemical liquid discharge section is formed along a direction in which the gas is ejected from the gas ejection section. .

1 Biological tissue adhesive applicator (medical solution injection tool)
2 Nozzle body (first member)
2d Syringe attachment port (chemical solution injection part, chemical solution flow path)
2g Gas injection part 2s Space 3 Chemical liquid distribution pipe (first chemical liquid flow path, chemical liquid flow path)
4 chemical flow pipes (second chemical flow passage, chemical flow passage)
7 Plunger 8 Plunger holder 9 Air filter 9a Connection port 10 Chemical solution 11 Extension part 11c Line 12 Head 12b Head body 12c Inner surface 12d Spray end piece (second member)
12e Discharge pipe (chemical solution discharge part, chemical solution flow path)
12f Gas ejection part 12fa Base end side upper edge 12fb Tip side lower edge 12g Chemical solution discharge port 12h Fitting part 12i Hook part 12j End piece main body 12k End face 17 Syringe 30 Regulator 31 Air supply tube 31a, 31b Connector 42 Head 42d Spray end Piece (second member)
42f Gas ejection part 42j End piece main body 52 Head 52d Spray end piece (2nd member)
52f Gas ejection part 52j End piece main body 62 Head 62d Spray end piece (2nd member)
62f Gas ejection part 62j End piece main body c1, c2 Center s1 Line segment G Insufflation gas X Nozzle Y Chemical liquid flow path Y1 First chemical liquid flow path Y2 Second chemical liquid flow path

Claims (10)

A nozzle having a space inside;
A chemical solution flow path through which the chemical solution is circulated through the space inside the nozzle and having a chemical solution injection portion into which the chemical solution is injected and a chemical solution discharge portion from which the chemical solution is discharged;
In the nozzle,
A gas injection part for injecting gas into the space;
A gas jet that is in the vicinity of the chemical solution discharge unit, injects the gas filled in the space from the gas injection unit, and sprays the chemical solution discharged from the chemical solution discharge unit of the chemical solution flow passage in a mist form Are provided, and
The angle formed by the ejection direction of the gas ejection part and the axial direction of the nozzle is larger than the angle formed by the ejection direction of the chemical liquid ejection part and the axial direction of the nozzle,
The living body characterized in that the ejection direction of the gas from the gas ejection section and the ejection direction of the chemical liquid from the chemical liquid ejection section obliquely intersect each other at the point where the chemical liquid is ejected from the chemical liquid ejection section. Chemical solution injection tool. A plurality of the chemical flow passages are provided,
The gas jetting unit is configured to spray the gas that is discharged from each of the chemical solution discharge portions in the plurality of chemical solution flow passages in a mist, and when the front end opening of the chemical solution discharge portion is viewed in front, The biomedical solution injection tool according to claim 1, wherein the biomedical solution injection device is sprayed in a direction intersecting with an arrangement direction of the plurality of chemical solution flow paths. The chemical solution discharge part extends along the discharge direction of the chemical solution,
The biomedical liquid injector according to claim 1, wherein the gas ejection part extends toward a discharge destination of the chemical liquid by the chemical liquid discharge part.   The biomedical liquid injector according to any one of claims 1 to 3, wherein the gas ejection part is formed at a position away from the chemical liquid ejection part when the front end opening of the gas ejection part is viewed in front. . The chemical liquid flow path includes a first chemical liquid flow path and a second chemical liquid flow path,
At least a part of the gas jetting part is formed such that the center of the chemical liquid discharge part of the first chemical liquid flow path and the center of the chemical liquid discharge part of the second chemical liquid flow path are viewed from the front end opening of the gas jet part. The biomedical solution injection device according to any one of claims 1 to 4, wherein the biomedical solution injection device is formed so as to approach a portion inside the both ends of a line segment connecting the two. The gas ejection part is formed in a non-circular shape in a part of a circumferential direction centering on the chemical solution discharge part when the front end opening of the gas ejection part is viewed in front.
The said nozzle is provided with the 1st member in which the said chemical | medical solution injection | pouring part was provided, and the 2nd member by which the said chemical | medical solution discharge part and the said gas ejection part were integrally molded. In-vivo chemical injection device. Further comprising a collar provided at a part opposite to the part where the chemical solution discharge part is provided across the gas ejection part,
The biomedical solution injection device according to any one of claims 1 to 6, wherein the collar portion is formed so as to protrude more distally than the tip of the drug solution discharge portion with reference to the discharge direction of the drug solution. .   The biomedical liquid injection tool according to any one of claims 1 to 7, wherein a tip opening of the gas ejection part is formed in an arc shape and is formed along the chemical liquid discharge part.   The biomedical liquid injection tool according to claim 8, wherein the distal end opening of the gas ejection part is formed in an arc shape having a central angle of 20 ° to 50 ° with the center of the chemical liquid discharge part being concentric.   The biomedical liquid injection tool according to any one of claims 1 to 9, wherein a distal end surface of the chemical liquid discharge section is formed along a direction in which the gas is ejected from the gas ejection section.

Images