CN114502232A - Biological cement coating tool - Google Patents

Abstract

The present invention provides a biological adhesive applying tool, comprising: a gas chamber having a gas introduction portion for introducing a gas and a gas ejection portion for ejecting the gas; and a plurality of liquid flow tubes which pass through an internal space of the gas chamber and have discharge ports arranged in the vicinity of the gas discharge portion, and which are configured to be sprayed and mixed with each other to be applied to a living tissue by pushing a liquid discharged from each of the discharge ports of the plurality of liquid flow tubes with the gas discharged from the gas discharge portion, wherein a specific liquid flow tube which is at least one of the plurality of liquid flow tubes has a pump portion which is formed by a part of the specific liquid flow tube in an axial direction thereof, the pump portion being compressed by an air pressure in a state where the gas is introduced into the gas chamber to reduce an internal volume thereof, and being elastically restored when the introduction of the gas into the gas chamber is stopped, and a convex portion is formed on an inner peripheral surface of the pump portion.

Description

Biological cement coating tool

Technical Field

The present invention relates to a biological cement coating tool.

Background

As a biocomposite adhesive application tool, there is a biocomposite adhesive application tool including a gas chamber having a gas introduction portion and a gas ejection portion, and a plurality of liquid flow tubes passing through an internal space of the gas chamber. Each liquid flow pipe has a discharge port disposed in the vicinity of the gas discharge portion. This biological adhesive application tool is configured to: the liquid discharged from the discharge ports of the plurality of liquid flow tubes is pushed by the gas discharged from the gas discharge portion, and is sprayed and mixed to be applied to the living tissue.

In such a biological cement application tool, a liquid coagulum leaking from the discharge port of the liquid flow pipe may grow.

Patent document 1 describes the following: the liquid flow tube includes a pump section (an expansion/contraction section in this document) which is compressed and contracted by an external pressure generated by the gas introduced into the gas chamber (the nozzle body in this document) and which recovers when the external pressure is reduced.

According to the technique of patent document 1, the pump portion is returned after stopping the discharge of the liquid and the introduction of the gas, whereby the liquid can be sucked from the discharge port side of the liquid circulation tube to the pump portion side, and as a result, the occurrence of the phenomenon of the growth of the solidified product of the liquid leaking from the discharge port of the liquid circulation tube can be suppressed.

Patent document 1: japanese patent laid-open publication No. 2018-201726

Disclosure of Invention

Problems to be solved by the invention

However, according to the research of the present inventors, there is room for improvement in the technique of patent document 1 regarding a structure for suppressing leakage of liquid from the discharge port of the liquid flow pipe.

The present invention has been made in view of the above-described problems, and provides a biological adhesive application tool having a structure capable of appropriately suppressing leakage of liquid from the discharge port of the liquid flow tube.

Means for solving the problems

The present invention provides a biological adhesive applying tool, comprising:

a gas chamber having a gas introduction portion for introducing a gas and a gas ejection portion for ejecting the gas; and

a plurality of liquid flow pipes which pass through the internal space of the gas chamber and have discharge ports arranged in the vicinity of the gas discharge portion,

the gas ejected from the gas ejection part pushes the liquid ejected from the ejection openings of the liquid flow tubes, thereby spraying and mixing the liquid to be applied to the living tissue,

a specific liquid circulation tube as at least one of the plurality of liquid circulation tubes has a pump portion constituted by a part of the specific liquid circulation tube in an axial direction,

the pump section is compressed by a gas pressure in a state where the gas is introduced into the gas chamber to reduce an internal volume, and is elastically restored when the introduction of the gas into the gas chamber is stopped,

a convex portion is formed on an inner peripheral surface of the pump portion.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, leakage of liquid from the discharge port of the liquid flow pipe can be appropriately suppressed.

Drawings

Fig. 1 is a diagram showing the overall configuration of a biological adhesive application tool according to embodiment 1.

Fig. 2 is a top cross-sectional view (cross-sectional view taken along line II-II in fig. 1) of the spray unit of the biological adhesive application tool according to embodiment 1.

Fig. 3 is a front view showing a tip end portion of a spray unit of the biological adhesive application tool according to embodiment 1.

Fig. 4 is a sectional view taken along line IV-IV of fig. 3.

In fig. 5, (a) of fig. 5 and (b) of fig. 5 are views showing a specific liquid flow tube of the biological adhesive applying tool according to embodiment 1, in which fig. 5 (a) is an enlarged sectional view of the periphery of a pump portion, and fig. 5 (b) is a plan view showing the entire 1 st liquid flow tube main body constituting the specific liquid flow tube.

In fig. 6, (a) of fig. 6 and (b) of fig. 6 are sectional views taken along line VI-VI of fig. 5 (a), in which fig. 6 (a) shows a state in which the pump portion is compressed, and fig. 6 (b) shows a state in which the pump portion is restored.

Fig. 7 (a) and 7 (b) are views showing the configuration of the pump portion periphery of the specific liquid flow tube of the biological adhesive applying tool according to embodiment 2, in which fig. 7 (a) is an enlarged plan view and fig. 7 (b) is a cross-sectional view taken along line VIIb-VIIb in fig. 7 (a).

In fig. 8, (a) of fig. 8 and (b) of fig. 8 are views showing the configuration of the periphery of the pump portion of the specific liquid circulation tube of the biological adhesive applying tool according to embodiment 3, in which (a) of fig. 8 is an enlarged cross-sectional view and (b) of fig. 8 is a cross-sectional view taken along the VIIIb-VIIIb line of fig. 8 (a).

Fig. 9 (a) and 9 (b) are enlarged views showing the configuration around the pump portion of the specific liquid flow tube of the biological adhesive applying tool according to embodiment 4, in which fig. 9 (a) is a cross-sectional view and fig. 9 (b) is a plan view.

In fig. 10, (a) of fig. 10, (b) of fig. 10, and (c) of fig. 10 are views showing the configuration of the vicinity of the distal end of the liquid flow tube of the biological adhesive application tool according to embodiment 5, in which fig. 10 (a) is a perspective view of the distal end side member, fig. 10 (b) is a front view showing the distal end portion of the spray unit, and fig. 10(c) is a cross-sectional view taken along line Xc-Xc of fig. 10 (b).

Fig. 11 is an enlarged cross-sectional view showing the configuration of the periphery of a pump portion of a specific liquid circulation tube in the biological adhesive applying tool according to embodiment 6.

In fig. 12, (a) in fig. 12 and (b) in fig. 12 are views showing the configuration of the vicinity of the distal end of the liquid flow tube of the biological adhesive applying tool according to embodiment 6, in which fig. 12 (a) is a perspective view of the distal end side member, and fig. 12 (b) is a cross-sectional view taken along the axial direction of the 1 st discharge tube, which corresponds to the Xc-Xc line of fig. 10 (b).

Detailed Description

Hereinafter, embodiments of the biological adhesive application tool according to the present invention will be described with reference to the drawings.

The embodiments described below are merely examples for facilitating understanding of the present invention, and do not limit the present invention. That is, the shapes, sizes, arrangements, and the like of the components described below can be modified and improved without departing from the spirit of the present invention.

In all the drawings, the same constituent elements are denoted by the same reference numerals, and overlapping descriptions are omitted as appropriate.

Hereinafter, in the biological adhesive application tool, the side from which the liquid is discharged is referred to as the tip side or the front side, and the opposite side is referred to as the base side or the rear side. The direction horizontal and orthogonal to the front-rear direction is referred to as the lateral direction, the left side when the biological adhesive application tool is viewed from the front side in the lateral direction is referred to as the left side direction, and the right side is referred to as the right side direction. However, these directions are defined for convenience, and are not limited to the directions in manufacturing or using the biocement application tool.

Further, unless otherwise specified, the description of the shape of each part of each liquid flow tube is made for the description of the shape in a natural state which is not a compressed state.

[ 1 st embodiment ]

First, embodiment 1 will be described with reference to (b) of fig. 1 to 6.

The left side in fig. 2 is the front, and the right side in fig. 2 is the rear. Fig. 3 shows an extracted front end portion of the spray unit 10 in the structure of the spray unit 10 as viewed from the left side in fig. 2. Fig. 5 (a) is a sectional view taken along the axial center of the 1 st liquid flow tube 31.

As shown in any one of fig. 1 to 6 (b), the biological adhesive application tool 100 according to the present embodiment includes: a gas chamber 20 (fig. 1 and 2) having a gas introduction portion 22 (fig. 1) for introducing a gas and a gas discharge portion 24 (fig. 1, 3, and 4) for discharging a gas; and a plurality of liquid flow pipes (for example, as shown in fig. 2, two liquid flow pipes, a 1 st liquid flow pipe 31 and a 2 nd liquid flow pipe 32) passing through the internal space 21 (fig. 2) of the gas chamber 20 and having discharge ports 31a and 32a (fig. 1 and 2) arranged in the vicinity of the gas discharge portion 24. The biological adhesive application tool 100 is configured to: the liquids 38 and 39 (fig. 3 and 4) discharged from the discharge ports 31a and 32a of the plurality of liquid flow tubes (the 1 st liquid flow tube 31 and the 2 nd liquid flow tube 32) are pushed by the gas discharged from the gas discharge portion 24, and are sprayed and mixed to be applied to the living tissue.

A specific liquid circulation tube (in the present embodiment, the 1 st liquid circulation tube 31) that is at least one of the plurality of liquid circulation tubes (the 1 st liquid circulation tube 31, the 2 nd liquid circulation tube 32) has a pump portion 40 (fig. 2, fig. 5a, fig. 5b) that is configured by a part of the specific liquid circulation tube (the 1 st liquid circulation tube 31) in the axial direction.

The pump section 40 is configured to: the gas chamber 20 is compressed by the gas pressure in a state where the gas is introduced therein, and the internal volume is reduced, and the gas chamber 20 is elastically restored when the introduction of the gas into the gas chamber is stopped.

A convex portion (for example, a pump section rib 45c shown in fig. 2, 5 (a), 5 (b), 6 (a), and 6 (b)) is formed on the inner peripheral surface of the pump section 40.

According to the present embodiment, since the specific liquid circulation tube (the 1 st liquid circulation tube 31) includes the pump section 40, the liquid 38 can be sucked from the discharge port 31a side of the specific liquid circulation tube to the pump section 40 side in the process of stopping the introduction of the air into the air chamber 20 and recovering the pump section 40 from the compressed state. Therefore, the liquid 38 can be prevented from leaking from the discharge port 31 a.

Further, the liquid 38 in the pump section 40 can be suppressed from flowing toward the discharge port 31a by the convex portion (pump section rib 45c) on the inner peripheral surface, and therefore, the leakage of the liquid 38 from the discharge port 31a can be suppressed more favorably.

Therefore, the occurrence of the phenomenon of the solidification growth of the liquid 38 leaking from the discharge port 31a can be suppressed. As a result, when the gas is introduced into the gas chamber 20 again, the liquids 38 and 39 are discharged from the liquid flow tubes, and the liquids 38 and 39 to be sprayed and mixed are applied to the living tissue, the liquid 38 can be discharged smoothly from the discharge port 31a of the specific liquid flow tube.

Further, when the pump section 40 is completely crushed by the air pressure, since a part of the inner peripheral surface of the pump section 40 can be brought into point contact or line contact (non-surface contact), the part can be suppressed from adhering to each other. Therefore, good recovery of the pump section 40 can be obtained.

As shown in fig. 1, the biological adhesive application tool 100 includes at least a spray unit 10.

As shown in fig. 2, the spray unit 10 is configured to: the gas chamber 20 and a plurality of liquid flow tubes (in the present embodiment, the 1 st liquid flow tube 31 and the 2 nd liquid flow tube 32) inserted into the gas chamber 20 are provided.

In the present embodiment, the biological adhesive application tool 100 includes, for example, two injection tools 80, a plunger holder 83, an air filter unit 85, a regulator 90, and an air supply pipe 91 in addition to the spray unit 10.

Each injection tool 80 has a syringe 81 and a plunger 82 inserted into the syringe 81.

One injection tool 80 is connected to the spray unit 10 such that the tip of the syringe 81 of the injection tool 80 communicates with the base end of the 1 st liquid flow tube 31. The other injection tool 80 is connected to the spray unit 10 such that the tip of the syringe 81 of the injection tool 80 communicates with the base end of the 2 nd liquid flow tube 32.

An injection tool 80 is used to inject a highly viscous and easily coagulable liquid 38 containing fibrinogen or the like into the 1 st liquid flow tube 31, for example.

The other injection tool 80 is used, for example, for injecting the liquid 39 containing thrombin or the like into the 2 nd liquid flow tube 32.

The plunger holder 83 holds base end portions of the plungers 82 of the two injection tools 80. A technician using the biological cement application tool 100 can push the two plungers 82 into the syringes 81 in synchronization with each other by holding the base end portions of the two plungers 82 with the plunger holder 83 and pushing the two plungers 82 into the corresponding syringes 81.

The liquid 38 is injected into the 1 st liquid flow tube 31 by pushing the plunger 82 of one injection tool 80 into the syringe 81, and the liquid 38 is discharged from the discharge port 31a at the tip of the 1 st liquid flow tube 31.

When the plunger 82 of the other injection tool 80 is pushed into the syringe 81, the liquid 39 is injected into the 2 nd liquid flow tube 32, and the liquid 39 is discharged from the discharge port 32a at the tip of the 2 nd liquid flow tube 32.

The downstream end of the air filter unit 85 is connected to the base end (upstream end) of the gas inlet 22 of the gas chamber 20. The air filter unit 85 includes an unillustrated air filter therein for removing impurities from the gas supplied from the gas supply source. The air filter unit 85 has a connection portion 85a for connecting the air supply pipe 91 at an upstream end of the air filter unit 85.

The gas supply pipe 91 is a flexible pipe. A base end portion of the air supply pipe 91 is provided with a 1 st connector 92a such as a female connector, and a tip end portion of the air supply pipe 91 is provided with a 2 nd connector 92b such as a male connector.

The 1 st connector 92a is connected to a gas outlet of the regulator 90. The 2 nd connector 92b is connected to the connection portion 85a of the air filter unit 85. Thereby, the regulator 90 and the air filter unit 85 are connected to each other via the regulator 90.

The gas introduction port of the regulator 90 is connected to a gas supply source, not shown, such as a gas bomb.

The gas supplied from the gas supply source to the regulator 90 is depressurized by the regulator 90 to a pressure suitable for use in the biological adhesive coating tool 100, and is introduced from the gas introduction portion 22 into the internal space 21 of the gas chamber 20 through the gas supply pipe 91 and the air filter unit 85 in this order.

The gas introduced into the internal space 21 is ejected from a gas ejection portion 24 formed at the distal end portion of the gas chamber 20. The gas ejection portion 24 is formed of, for example, one or a plurality of fine holes, and the gas introduced into the internal space 21 is strongly blown out from the gas ejection portion 24.

While the gas is introduced into the gas chamber 20 from the gas introduction portion 22, the internal space 21 is maintained at a pressure higher than atmospheric pressure.

When using the biological adhesive application tool 100, a technician operates the plunger holder 83 while introducing gas into the gas chamber 20, and pushes the syringes 81 of the two injection tools 80 into the respective plungers 82.

This makes it possible to discharge the liquids 38 and 39 from the discharge ports 31a and 32a of the 1 st liquid flow pipe 31 and the 2 nd liquid flow pipe 32 while discharging the gas from the gas discharge portion 24.

Therefore, the liquids 38 and 39 discharged from the discharge ports 31a and 32a are pushed by the gas discharged from the gas discharge portion 24, and sprayed and mixed to be applied to the living tissue.

As shown in fig. 2, the spray unit 10 is configured, for example, such that: the chamber body 50, the base end side member 60, the tip end side member 70, the 1 st liquid flow tube body 33, and the 2 nd liquid flow tube body 34, which will be described below, are provided.

The gas chamber 20 is mainly constituted by the chamber body 50 and the base end side member 60, the 1 st liquid flow tube 31 is mainly constituted by the 1 st liquid flow tube body 33 and a part of the tip side member 70, and the 2 nd liquid flow tube 32 is mainly constituted by the 2 nd liquid flow tube body 34 and another part of the tip side member 70.

As shown in fig. 1 and 2, the chamber body 50 is a hollow member, and is formed, for example, in a bell shape which is flat in the upper and lower directions and is tapered toward the front. The inner space of the chamber body 50 constitutes the inner space 21.

The chamber body 50 includes a gas introduction part 22. The gas introduction portion 22 is formed in a tubular shape, for example, protruding upward (e.g., rearward and upward) from the top surface of the chamber body 50.

The chamber body 50 is formed, for example, in a left-right symmetrical manner, and the portion of the chamber body 50 other than the gas introducing portion 22 is formed in a vertical symmetrical manner.

The front end portion 52 of the chamber body 50 has two insertion holes 52a (fig. 3 and 4) arranged side by side with each other. Each insertion hole 52a penetrates the front end portion 52 in the front-rear direction, and communicates the internal space of the chamber body 50 (i.e., the internal space 21) and the space in front of the chamber body 50 with each other.

The base end portion 51 of the chamber body 50 has a base end side opening 51a that opens rearward.

As shown in fig. 2, the proximal end side member 60 includes, for example, a plate-shaped body portion 61, a pair of left and right syringe attachment portions 62a and 62b to which syringes 81 of an injection tool 80 are attached (coupled), respectively, a pair of left and right liquid flow tube attachment portions 63a and 63b to which proximal end portions 33a and 34a of a 1 st liquid flow tube body 33 and a 2 nd liquid flow tube body 34, which will be described later, are attached, respectively, and a partition wall structure portion 65.

The main body 61 is formed in a flat plate shape elongated in the left-right direction, for example, and the plate surface of the main body 61 faces in the front-rear direction. The body portion 61 is attached to the base end portion 51 so as to close the base end side opening 51a of the chamber body 50.

The inner space 21 is defined by the inner peripheral surface of the chamber body 50 and the front surface of the body portion 61.

The left syringe attachment portion 62a protrudes rearward from the left end of the body portion 61, and the right syringe attachment portion 62b protrudes rearward from the right end of the body portion 61.

The left liquid flow pipe attachment portion 63a protrudes forward from the left end portion of the body 61, and the right liquid flow pipe attachment portion 63b protrudes forward from the right end portion of the body 61. The liquid flow tube attachment portions 63a and 63b are disposed in the internal space 21.

The syringe attachment portion 62a and the liquid flow tube attachment portion 63a are disposed coaxially with each other so as to sandwich the left end portion of the body portion 61, and the syringe attachment portion 62b and the liquid flow tube attachment portion 63b are disposed coaxially with each other so as to sandwich the right end portion of the body portion 61.

The base end member 60 is formed with a pair of left and right through holes 64a, 64 b.

The left through-hole 64a penetrates the base end side member 60 from the rear end of the syringe mounting portion 62a to the front end of the liquid flow tube mounting portion 63a, and the right through-hole 64b penetrates the base end side member 60 from the rear end of the syringe mounting portion 62b to the front end of the liquid flow tube mounting portion 63 b.

The partition wall structure portion 65 is a plate-shaped portion extending forward from the widthwise central portion of the front surface of the main body portion 61, and the plate surface of the partition wall structure portion 65 faces in the left-right direction.

The partition wall structure portion 65 constitutes the partition wall portion 25 that partitions the internal space 21 in the right and left.

The gas introduction portion 22 is disposed above the partition wall portion 25 (partition wall structure portion 65). The downstream end of the gas introduction portion 22 extends across the partition wall structure portion 65. Therefore, the gas introduced into the internal space 21 from the gas introduction portion 22 is distributed into the left half region and the right half region in the internal space 21 by the partition wall portion 25.

As shown in fig. 2, the distal end side member 70 includes, for example, a 1 st discharge pipe 71 constituting a distal end portion of the 1 st liquid flow pipe 31, a 2 nd discharge pipe 72 constituting a distal end portion of the 2 nd liquid flow pipe 32, and a coupling portion 73 coupling the 1 st discharge pipe 71 and the 2 nd discharge pipe 72 to each other.

The 1 st discharge pipe 71 and the 2 nd discharge pipe 72 are each formed in a circular pipe shape, are spaced apart from each other, and are arranged in parallel with each other.

The coupling portion 73 couples, for example, the center portion in the axial direction of the 1 st discharge pipe 71 and the center portion in the axial direction of the 2 nd discharge pipe 72 to each other.

Therefore, for example, the planar shape of the distal member 70 is an H shape.

In the 1 st discharge pipe 71, a portion projecting further to the proximal end side than the connection portion 73 is a holding portion 71a that holds the distal end portion 33b of the 1 st liquid flow pipe main body 33, and a portion projecting further to the distal end side than the connection portion 73 is a projecting portion 71 b.

In the 2 nd discharge pipe 72, a portion projecting toward the proximal end side from the coupling portion 73 is a holding portion 72a that holds the distal end portion 34b of the 2 nd liquid flow pipe body 34, and a portion projecting toward the distal end side from the coupling portion 73 is a projecting portion 72 b.

The opening at the tip of the 1 st discharge pipe 71, i.e., the opening at the tip of the projection 71b, constitutes the discharge port 31 a. The opening at the tip of the 2 nd discharge pipe 72, i.e., the opening at the tip of the projection 72b, constitutes the discharge port 32 a.

As described above, the front end portion 52 of the chamber body 50 has the two insertion holes 52a arranged side by side.

The protruding portions 71b and 72b of the distal end side member 70 are inserted into the left and right insertion holes 52a from the rear of the distal end portion 52. That is, the protruding portion 71b is inserted into the left insertion hole 52a, and the protruding portion 72b is inserted into the right insertion hole 52 a.

The projections 71b and 72b project slightly forward from the front surface of the distal end portion 52.

The coupling portion 73 is sandwiched between, for example, the rear surface of the front end portion 52 and the front end surface of the partition wall structure portion 65. This regulates the rearward displacement of the front end member 70 relative to the front end portion 52 (i.e., the protrusions 71b and 72b fall out of the insertion holes 52a in the rearward direction).

The 1 st discharge pipe 71 and the 2 nd discharge pipe 72 each have an axial direction extending in the front-rear direction.

As shown in fig. 3, in the present embodiment, the gas chamber 20 includes the gas spouting portion 24 disposed on the left side near the discharge port 31a and the gas spouting portion 24 disposed on the right side near the discharge port 32 a.

The left gas discharge portion 24 is formed by a portion around the projection 71b of the opening at the tip of the left insertion hole 52 a.

The right gas ejection portion 24 is formed by a portion of the opening at the tip of the right insertion hole 52a, which is located around the protrusion 72 b.

As shown in fig. 3, the inner circumferential surface of each insertion hole 52a is formed with a plurality of (e.g., four) fixing ribs 52b that protrude radially inward of each insertion hole 52 a. The plurality of fixing ribs 52b of each insertion hole 52a are arranged at predetermined intervals (for example, at equal angular intervals) in the circumferential direction of each insertion hole 52 a.

The projection 71b of the 1 st discharge pipe 71 is press-fitted into the left insertion hole 52a, and the fixing ribs 52b of the left insertion hole 52a are in pressure contact with the outer peripheral surface of the projection 71 b.

The projection 72b of the 2 nd discharge pipe 72 is press-fitted into the right insertion hole 52a, and the fixing ribs 52b of the right insertion hole 52a are in pressure contact with the outer peripheral surface of the projection 72 b.

Therefore, the protruding portion 71b is fixed in the left insertion hole 52a, and the protruding portion 72b is fixed in the right insertion hole 52 a.

The gas chamber 20 has gas flow channels 23 (fig. 4) for guiding the gas introduced into the internal space 21 to the gas ejection portions 24.

In the present embodiment, the gas chamber 20 includes a left gas flow channel 23 for guiding the gas to the left gas ejection portion 24 and a right gas flow channel 23 for guiding the gas to the right gas ejection portion 24.

The gap between the outer peripheral surface of the protruding portion 71b and the inner peripheral surface of the left insertion hole 52a constitutes the left gas flow passage 23, and the gap between the outer peripheral surface of the protruding portion 72b and the inner peripheral surface of the left insertion hole 52a constitutes the right gas flow passage 23.

That is, each gas flow channel 23 is an aggregate of a plurality of (for example, four in the present embodiment) gas flow channels partitioned by the fixing rib 52 b.

The opening at the tip of the gas flow channel 23 is a gas ejection portion 24. That is, each of the left and right gas ejection portions 24 is an aggregate of a plurality of (four, for example, in the present embodiment) openings.

As described above, the projections 71b and 72b project slightly forward from the insertion hole 52a, and therefore the gas ejection portions 24 are arranged near the discharge ports 31a and 31 b. Therefore, the liquids 38 and 39 discharged from the discharge ports 31a and 32a can be atomized and mixed by the gas discharged from the gas discharge portions 24 to the outside.

The coupling portion 73 covers, for example, a side surface of the 1 st discharge pipe 71 opposite to the 2 nd discharge pipe 72 side, and a side surface of the 2 nd discharge pipe 72 opposite to the 1 st discharge pipe 71 side.

Thereby, a narrow gap is formed between the coupling portion 73 and the inner peripheral surface of the chamber body 50 in the vicinity of the distal end portion 52.

The gas in the internal space 21 is guided to the gas flow channel 23 through these gaps.

The material constituting the gas chamber 20 (i.e., the material constituting the chamber main body 50, the base end side member 60, and the tip end side member 70) is not particularly limited, and the chamber main body 50, the base end side member 60, and the tip end side member 70 are formed of, for example, a resin.

The volume of the gas chamber 20 is preferably substantially not changed by the gas pressure in the internal space 21. Therefore, the chamber body 50, the proximal member 60, and the distal member 70 are preferably made of a hard resin.

As shown in fig. 2, the 1 st liquid flow tube main body 33 and the 2 nd liquid flow tube main body 34 are each a tubular member.

The base end portion 33a of the 1 st liquid flow tube main body 33 is attached to the liquid flow tube attachment portion 63a (held by the liquid flow tube attachment portion 63 a) by being inserted into the liquid flow tube attachment portion 63a from the outside, for example. The distal end portion 33b of the 1 st liquid flow tube main body 33 is attached to the holding portion 71a (held by the holding portion 71 a) by, for example, being inserted into the holding portion 71a from the outside. The opening at the base end of the syringe attachment portion 62a and the discharge port 31a at the tip end of the 1 st discharge tube 71 communicate with each other via the through-hole 64a, the 1 st liquid flow tube main body 33, and the 1 st discharge tube 71. The 1 st liquid flow pipe 31 is composed of the 1 st liquid flow pipe body 33, the 1 st discharge pipe 71, and the through hole 64a of the base end side member 60.

Similarly, the base end portion 34a of the 2 nd liquid flow tube main body 34 is attached to the liquid flow tube attachment portion 63b (held by the liquid flow tube attachment portion 63 b) by being inserted into the liquid flow tube attachment portion 63b from the outside, for example. The distal end portion 34b of the 2 nd liquid flow tube main body 34 is attached to the holding portion 72a (held by the holding portion 72 a) by, for example, being inserted into the holding portion 72a from the outside. The opening at the base end of the syringe mounting portion 62b and the discharge port 32a at the tip end of the 2 nd discharge pipe 72 communicate with each other via the through-hole 64b, the 2 nd liquid flow pipe main body 34, and the 2 nd discharge pipe 72. The 2 nd liquid flow pipe 32 is composed of the 2 nd liquid flow pipe body 34, the 2 nd discharge pipe 72, and the through hole 64b of the base end side member 60.

The holding portion 71a, the 1 st liquid flow tube main body 33, and the liquid flow tube attachment portion 63a are disposed in one (left) region of the internal space 21 partitioned by the partition wall portion 25, and the holding portion 72a, the 2 nd liquid flow tube main body 34, and the liquid flow tube attachment portion 63b are disposed in the other (right) region of the internal space 21 partitioned by the partition wall portion 25.

As shown in fig. 2, the 1 st liquid flow tube main body 33 has a pump section 40.

The pump section 40 is a portion compressed by the external pressure (the air pressure in the internal space 21) at a compression ratio (the ratio of the internal volume being reduced) larger than that of the portion of the 1 st liquid flow tube 31 other than the pump section 40.

For example, the inner diameter and the outer diameter (average value of the inner diameter and the outer diameter) of the pump section 40 are larger than those of the 1 st liquid flow tube 31 except for the pump section 40.

The 1 st liquid flow tube main body 33 and the 2 nd liquid flow tube main body 34 are integrally molded with each other by a flexible material such as an elastomer (for example, silicone rubber).

In the present embodiment, the 1 st liquid flow tube main body 33 (the 1 st liquid flow tube 31) is locally formed thin at the pump portion 40. Therefore, the 1 st liquid flow tube main body 33 (although integrally molded of the same material as a whole) is locally formed flexibly at the pump portion 40. However, the present invention is not limited to this example, and in the 1 st liquid flow tube 31, a part constituting the pump section 40 may be partially made of a material softer than other parts.

As shown in fig. 5 (a) and 5 (b), the pump section 40 includes, for example, a cylindrical section 45, a tapered section 46 connected to the distal end side of the cylindrical section 45, and a tapered section 46 connected to the proximal end side of the cylindrical section 45.

The cylindrical portion 45 of the pump section 40 has, for example, a cylindrical main portion 45a and a pump section rib 45c (rib, convex portion) formed on the inner circumferential surface of the main portion 45 a.

The main portion 45a has a constant inner diameter and a constant outer diameter, and thus the main portion 45a has a constant wall thickness.

The pump section rib 45c extends in the circumferential direction of the pump section 40. That is, in the present embodiment, the convex portion of the pump portion 40 is a rib (pump portion rib 45c) extending in the circumferential direction of the pump portion 40.

The number of the pump section ribs 45c included in the cylindrical section 45 of the pump section 40 is not particularly limited, and may be one or a plurality of ribs.

In the present embodiment, the cylindrical portion 45 of the pump portion 40 has, for example, a plurality of (for example, seven) pump portion ribs 45c spaced apart from each other in the axial direction of the pump portion 40. That is, ribs (pump section ribs 45c) are formed at a plurality of positions in the axial direction of the pump section 40.

Each pump section rib 45c may extend in the circumferential direction of the pump section 40, and does not necessarily need to be wound 360 degrees in the circumferential direction of the pump section 40. The pump section rib 45C may be formed in a C-ring shape, or may be an aggregate of a plurality of ribs intermittently arranged in the circumferential direction of the pump section 40.

In the present embodiment, each pump section rib 45c extends around 360 degrees in the circumferential direction of the pump section 40.

As for the tapered portion 46 on the tip side, for example, the inner diameter is tapered toward the tip side and the outer diameter is tapered toward the tip side, and the wall thickness of the tapered portion 46 is gradually increased toward the tip side.

The inner diameter of the proximal tapered portion 46 is tapered toward the proximal end, for example. The outer diameter of the tapered portion 46 of the pump portion 40 is tapered toward the base end side at the front portion (tip end side portion) of the tapered portion 46, and is constant at the rear portion (base end side portion) of the tapered portion 46. For example, the wall thickness of the tapered portion 46 of the pump portion 40 is constant at the front portion of the tapered portion 46, and gradually increases toward the base end side at the rear portion of the tapered portion 46.

In the present embodiment, the outer peripheral surface of the cylindrical portion 45 is formed in a smooth cylindrical shape. The outer peripheral surfaces of the front and rear tapered portions 46 are also formed in a smooth cylindrical shape (a cylindrical shape in which the whole or a part thereof is conical).

That is, in the present embodiment, the outer peripheral surface of the pump section 40 is formed in a smooth cylindrical shape.

In the 1 st liquid flow tube main body 33, a compression ratio (a ratio of reduction in internal volume) at which a portion other than the pump section 40 is compressed by an external pressure (air pressure in the internal space 21) is smaller than that of the pump section 40.

The 1 st liquid flow tube main body 33 includes, as portions other than the pump portion 40, a non-pump portion 35 located on the tip side of the pump portion 40 and a non-pump portion 36 located on the base end side of the pump portion 40.

The non-pump section 35 located on the distal end side of the pump section 40 includes, for example, a straight tube-shaped straight tube section 35a connected to the distal end side of the tapered section 46 of the pump section 40 and a distal end section 35b connected to the distal end side of the straight tube section 35 a.

The non-pump section 35 is formed, for example, so that the entire non-pump section 35 has a constant inner diameter.

The straight tube portion 35a is formed to have a constant outer diameter as a whole.

The inner diameter and the outer diameter of the straight tube portion 35a are equal to those at the tip of the tapered portion 46 of the pump portion 40.

The outer diameter of the base end of the front end portion 35b is equal to the outer diameter of the front end of the straight tube portion 35 a.

The outer diameter of the distal end portion 35b is tapered toward the distal end side at the rear portion (proximal end side portion) of the distal end portion 35b, and is constant at the front portion (distal end side portion) of the distal end portion 35 b.

The non-pump section 36 located at the base end side of the pump section 40 has, for example, a straight tube-shaped straight tube section 36a connected to the base end side of the tapered section 46 of the pump section 40 and a base end section 36b connected to the base end side of the straight tube section 36 a.

The non-pump section 36 is formed, for example, so that the entire non-pump section 36 has a constant inner diameter.

The straight tube portion 36a is formed to have a constant outer diameter as a whole.

The inner and outer diameters of the straight tube portion 36a are equal to those at the base end of the tapered portion 46 of the pump portion 40.

The base end portion 36b has an outer diameter equal to that of the straight tube portion 36a at a rear portion (base end side portion) of the base end portion 36b, and is relatively small at a front portion (front end side portion) of the base end portion 36 b.

Here, as described above, the holding portion 71a is inserted into the distal end portion 33b of the 1 st liquid flow tube main body 33, and the distal end portion 33b is held by the holding portion 71 a.

Similarly, the base end portion 33a of the 1 st liquid flow tube main body 33 is inserted into the liquid flow tube attachment portion 63a, and the base end portion 33a is held by the liquid flow tube attachment portion 63 a.

The distal end portion 33b may include at least the distal end portion of the distal end portion 35b, or may include the entire distal end portion 35b and the distal end portion of the straight tube portion 35 a.

The base end portion 33a includes at least a base end portion of the base end portion 36b, and may include the entire base end portion 36b and a base end portion of the straight tube portion 36 a.

The distal end portion 33b and the proximal end portion 33a are held by the holding portion 71a and the liquid flow tube mounting portion 63a, respectively, and therefore are not substantially compressed by the external pressure (the air pressure in the internal space 21).

That is, the tip portion 33b is not the pump portion 40 because it does not function as the pump portion 40 even if it is formed thinner than the straight tube portion 35a (or, even if it is formed thinner than the portion of the straight tube portion 35a other than the portion constituting the tip portion 33 b). Similarly, the base end portion 33a is not the pump portion 40 because it does not function as the pump portion 40 even if it is formed thinner than the straight tube portion 36a (or, a portion of the straight tube portion 36a other than the portion constituting the base end portion 33 a).

That is, the pump section 40 is different from a portion (the distal end portion 33b or the proximal end portion 33a) of the 1 st liquid flow tube main body 33 which is directly held by another member.

In the present embodiment, the pump section 40 is formed locally thinner (average thickness is small) than the portion of the 1 st liquid flow tube main body 33 other than the pump section 40, which is neither the tip portion 33b nor the base portion 33 a.

In the present embodiment, for example, the inner diameter of the straight tube portion 35a is smaller than the inner diameter of the straight tube portion 36a, and the outer diameter of the straight tube portion 35a is smaller than the outer diameter of the straight tube portion 36 a.

The outer diameter of the tip end portion 35b is smaller than the outer diameter of the straight tube portion 35 a.

Therefore, as shown in fig. 2, a sufficient gap can be secured between the outer peripheral surface of the distal end portion 33b and the inner peripheral surface of the chamber body 50, and thus the gas in the internal space 21 can be smoothly discharged from the gas discharge portion 24 through the gas flow passage 23.

The pump section 40 is preferably disposed in a portion on the distal end side of the 1 st liquid flow tube main body 33. In this way, the liquid 38 can be more appropriately sucked from the discharge port 31a side of the specific liquid flow tube to the pump section 40 side. In the present embodiment, the half portion on the tip side of the 1 st liquid flow tube main body 33 includes at least the tip portion of the pump portion 40.

The 2 nd fluid flow pipe body 34 is formed in a straight pipe shape as a whole (the outer diameter and the inner diameter of the whole are substantially constant), for example.

The thickness of the 1 st liquid flow tube main body 33 (excluding the plurality of pump sections 40) is formed thicker than the thickness of the 2 nd liquid flow tube main body 34, for example. For example, the outer diameter of the 2 nd liquid flow tube main body 34 is smaller than the outer diameter of the 1 st liquid flow tube main body 33, and the inner diameter of the 2 nd liquid flow tube main body 34 is smaller than the inner diameter of the 1 st liquid flow tube main body 33.

Next, the operation will be described.

When the biological adhesive application tool 100 is used, the air filter unit 85 is connected to the gas introduction part 22, the 2 nd connector 92b of the air supply pipe 91 is connected to the connection part 85a, the 1 st connector 92a is connected to the regulator 90, and the regulator 90 is connected to a gas supply source such as a gas cylinder.

The tip of the syringe 81 of one injection tool 80 is connected to the syringe mounting portion 62a of the spray unit 10, and the tip of the syringe 81 of the other injection tool 80 is connected to the syringe mounting portion 62 b. The syringe 81 of one injection tool 80 stores a high-viscosity liquid 38 containing fibrinogen and the like, and the syringe 81 of the other injection tool 80 stores a liquid 39 containing thrombin and the like.

The gas supplied from the gas supply source is depressurized by the regulator 90 and introduced into the internal space 21 of the gas chamber 20 through the gas supply pipe 91 and the air filter unit 85. Thereby, the gas is discharged from each gas discharge portion 24.

Then, in a state where the discharge ports 31a and 32a of the spray unit 10 are directed to the target living tissue (for example, organs in the living body), the technician holds the base end portions of the plungers 82 of the two injection tools 80 together using the plunger holder 83, and pushes the two plungers 82 into the corresponding syringes 81.

Thereby, the liquid 38 is injected from the injector 81 of one injection tool 80 into the 1 st liquid flow tube 31, and the liquid 39 is injected from the injector 81 of the other injection tool 80 into the 2 nd liquid flow tube 32. Therefore, the liquid 38 is discharged from the discharge port 31a of the 1 st liquid flow pipe 31, while the liquid 39 is discharged from the discharge port 32a of the 2 nd liquid flow pipe 32.

That is, the gas is ejected from the gas ejection portions 24, and the liquids 38 and 39 are ejected from the ejection ports 31a and 32 a.

Thus, the liquid 38 discharged from the discharge port 31a can be pushed and sprayed mainly by the gas discharged from the gas discharge portion 24 near the discharge port 31a, and the liquid 39 discharged from the discharge port 32a can be pushed and sprayed mainly by the gas discharged from the gas discharge portion 24 near the discharge port 32 a. Therefore, the liquid 38 and the liquid 39 can be mixed in mist form and applied to the target living tissue.

The liquid 38 and the liquid 39, which are atomized and sprayed and mixed, function as a binding agent (biological binding agent). That is, fibrinogen is changed to fibrin by the action of thrombin, thereby coagulating the cement.

Then, in order to finish application of the cement to the living tissue, the technician stops pushing each plunger 82 into each syringe 81.

Here, while the gas is introduced into the internal space 21, the pressure of the gas in the internal space 21 is increased. Therefore, at least after the plunger 82 is stopped being pushed into the syringe 81, until the introduction of the air into the air chamber 20 is stopped, the pump section 40 is compressed by the air pressure in the internal space 21, and the internal volume of the pump section 40 is reduced.

In a state where the pump section 40 is compressed, as shown in fig. 6 (a), for example, in a cross section of the pump section 40, portions facing each other are in contact with or close to each other. Therefore, the internal volume of the pump section 40 is smaller than that in the natural state.

Then, the introduction of the gas into the gas chamber 20 is stopped. As a result, the pressure of the gas in the internal space 21 is reduced, and the pump section 40 is restored to the natural shape by the elastic restoring force, that is, the cross-sectional shape is a cylindrical shape as shown in fig. 6 (b). Therefore, the internal volume of the pump section 40 is expanded compared to the compressed state.

Therefore, the interior of the pump section 40 becomes a negative pressure temporarily, and thus the liquid 38 can be sucked from the discharge port 31a side of the 1 st liquid flow pipe 31 to the pump section 40 side. That is, in the process of stopping the introduction of the air into the air chamber 20 and returning the pump section 40 from the compressed state to the natural state, the liquid 38 is sucked from the discharge port 31a side to the pump section 40 side.

The liquid 38 sucked by the pump unit 40 is the liquid 38 closer to the discharge port 31a than the pump unit 40, and includes, for example, the liquid 38 outside the discharge port 31a (the leaked liquid 38) or the liquid 38 immediately before the discharge port 31 a.

Since the liquid 38 can be sucked from the discharge port 31a side to the pump section 40 side by the pump section 40, the liquid 38 can be prevented from leaking from the discharge port 31 a. Therefore, the occurrence of the phenomenon of the solidification growth of the liquid 38 leaking from the discharge port 31a can be suppressed.

Therefore, when the gas is newly introduced into the gas chamber 20, the liquids 38 and 39 are discharged from the respective liquid flow pipes, and the liquids 38 and 39 to be sprayed and mixed are applied to the living tissue, the liquid 38 can be smoothly discharged from the discharge port 31a of the 1 st liquid flow pipe 31.

When the air is newly introduced into the air chamber 20 and the liquids 38 and 39 are discharged from the respective liquid flow tubes, the pump section 40 is in a compressed state. Therefore, the liquid 38 stored in the pump section 40 is immediately pushed out to the discharge port 31a side. Therefore, when the injection of the liquid 38 by the plunger 82 is restarted, the liquid 38 is quickly discharged from the discharge port 31a with good responsiveness.

In the present embodiment, since the convex portion (the pump portion rib 45c) is formed on the inner peripheral surface of the pump portion 40, the liquid 38 in the pump portion 40 can be prevented from flowing toward the discharge port 31a by the convex portion. That is, when the pump section 40 finishes returning to the natural state and the suction force does not act, a part of the liquid 38 sucked to the pump section 40 side tries to flow in the direction of the discharge port 31a by its own weight. However, the pump section ribs 45c formed on the inner peripheral surface restrict the flow of the liquid 38, so the liquid 38 can be appropriately held in the pump section 40. That is, the leakage of the liquid 38 from the discharge port 31a can be suppressed.

In the present embodiment, the specific liquid circulation tube having the pump section 40 is the 1 st liquid circulation tube 31 for circulating the high-viscosity liquid 38 containing fibrinogen and the like. Therefore, the viscosity of the liquid 38 can prevent the liquid 38 from flowing toward the discharge port 31a due to its own weight or the like after the liquid 38 is sucked toward the pump section 40 by returning the pump section 40 to the natural state.

Further, since the projection is the pump section rib 45c extending in the circumferential direction of the pump section 40, the liquid 38 can be more favorably prevented from leaking from the discharge port 31a, and the recovery of the pump section 40 can be promoted by the projection.

In particular, since the pump section rib 45c extends around the pump section 40 for 360 degrees in the circumferential direction, the leakage of the liquid 38 from the discharge port 31a can be suppressed more favorably, and the action of the pump section rib 45c for promoting the recovery of the pump section 40 is further increased.

Further, since the pump section ribs 45c are formed at a plurality of positions in the axial direction of the pump section 40, the leakage of the liquid 38 from the discharge port 31a can be more favorably suppressed by the pump section ribs 45c, and the action of promoting the recovery of the pump section 40 can be further increased.

Further, since the outer peripheral surface of the pump section 40 is formed in a smooth cylindrical shape, even if the pump section 40 is disposed in the vicinity of the distal end of the tapered internal space 21 (in the vicinity of the distal end portion 52), the air can be satisfactorily circulated through the gap between the pump section 40 and the inner peripheral surface of the air chamber 20.

[ 2 nd embodiment ]

Next, embodiment 2 will be described with reference to fig. 7 (a) and 7 (b). Fig. 7 (a) and 7 (b) show the periphery of the pump section 40 according to embodiment 2, where fig. 7 (a) is an enlarged plan view, and fig. 7 (b) is a sectional view taken along VIIb-VIIb line in fig. 7 (a).

The biological adhesive application tool according to the present embodiment is different from the biological adhesive application tool 100 according to embodiment 1 in the following description, and is otherwise configured similarly to the biological adhesive application tool 100 according to embodiment 1.

As shown in fig. 7 (a) and 7 (b), in the present embodiment, the pump section rib 45c is an aggregate of a plurality of ribs 451c intermittently arranged in the circumferential direction of the pump section 40. That is, the plurality of ribs 451c are intermittently arranged in the circumferential direction of the pump section 40.

The plurality of ribs 451c are disposed at equal intervals (at equal angular intervals) in the circumferential direction of the pump section 40, for example.

The number of ribs 451c intermittently arranged in the circumferential direction of the pump section 40 is not particularly limited, and is six in the present embodiment, as an example.

In the present embodiment, the liquid 38 in the pump section 40 can be prevented from flowing toward the discharge port 31a by the convex portion (the pump section rib 45c) on the inner peripheral surface, and therefore leakage of the liquid from the discharge port 31a can also be prevented.

In the present embodiment, the recovery of the pump section 40 can be promoted by the pump section rib 45 c.

Further, since the plurality of ribs 451c are intermittently arranged in the circumferential direction of the pump section 40, even if the pump section 40 is completely compressed by the air pressure, the liquid 38 can be made to flow in the axial direction of the 1 st liquid flow tube 31 through the gaps between the adjacent ribs 451 c.

[ 3 rd embodiment ]

Next, embodiment 3 will be described with reference to fig. 8 (a) and 8 (b). Fig. 8 (a) and fig. 8 (b) show the pump section 40 of embodiment 3, in which fig. 8 (a) is a sectional view taken along the axial center of the 1 st liquid flow tube 31, and fig. 8 (b) is a sectional view taken along the line VIIIb-VIIIb in fig. 8 (a).

The biological adhesive application tool according to the present embodiment is different from the biological adhesive application tool 100 according to embodiment 1 in the following description, and is otherwise configured similarly to the biological adhesive application tool 100 according to embodiment 1.

As shown in fig. 8 (a) and 8 (b), in the present embodiment, an outer circumferential rib 45b extending in the circumferential direction of the pump section 40 is formed on the outer circumferential surface of the pump section 40. Therefore, recovery of the pump section 40 is further promoted.

More specifically, for example, an outer circumferential rib 45b is formed on the outer circumferential surface of the cylindrical portion 45. The number of the outer circumferential ribs 45b is not particularly limited, and may be one or more.

In the present embodiment, the outer circumferential ribs 45b are formed at a plurality of positions (for example, seven positions) in the axial direction of the pump section 40.

Each outer circumferential rib 45b does not necessarily need to extend 360 degrees in the circumferential direction of the pump portion 40 as long as it extends in the circumferential direction of the pump portion 40. The outer circumferential rib 45b may be formed in a C-ring shape, or may be an aggregate of a plurality of ribs intermittently arranged in the circumferential direction of the pump section 40.

In the present embodiment, each outer circumferential rib 45b extends around 360 degrees in the circumferential direction of the pump section 40.

The positional relationship between the pump section rib 45c and the outer circumferential side rib 45b is not particularly limited, and for example, as shown in fig. 8 (a), the pump section rib 45c and the outer circumferential side rib 45b are arranged at the same position in the axial direction of the pump section 40. However, the present invention is not limited to this example, and the pump section rib 45c and the outer circumferential side rib 45b may be disposed at different positions from each other in the axial direction of the pump section 40.

The number of pump section ribs 45c and the number of outer circumferential side ribs 45b may be equal to or different from each other.

The height at which the pump section rib 45c protrudes from the inner peripheral surface of the main section 45a of the cylindrical section 45 and the height at which the outer peripheral side rib 45b protrudes from the outer peripheral surface of the main section 45a may be equal to each other or may be different from each other.

[ 4 th embodiment ]

Next, embodiment 4 will be described with reference to fig. 9 (a) and 9 (b). Fig. 9 (a) and 9 (b) are enlarged views showing the configuration of the pump portion periphery of the 1 st liquid flow tube 31 of the biological adhesive applying tool according to embodiment 4, in which fig. 9 (a) is a cross-sectional view taken along the axial center of the 1 st liquid flow tube 31, and fig. 9 (b) is a plan view.

The biological adhesive application tool 100 according to the present embodiment is different from the biological adhesive application tool 100 according to embodiment 1 in the following description, and is otherwise configured similarly to the biological adhesive application tool 100 according to embodiment 1.

As shown in fig. 9 (a) and 9 (b), in the present embodiment, the 1 st liquid flow tube 31 includes a plurality of pump portions 40 each including different portions in the axial direction of the 1 st liquid flow tube 31. In the present embodiment, the 1 st liquid flow tube 31 includes, for example, two pump sections 40, i.e., a 1 st pump section 41 and a 2 nd pump section 42. The 2 nd pump section 42 is disposed on the upstream side (base end side) of the 1 st liquid flow tube 31 from the 1 st pump section 41.

In the 1 st liquid distribution tube 31, a portion between the plurality of pump sections 40 is formed as a constricted section 37 having a diameter smaller than that of the pump section 40.

In the present embodiment, the 1 st liquid flow tube 31 has a plurality of pump sections 40. Therefore, the liquid 38 can be sucked from the discharge port 31a side to the pump section 40 side with a stronger suction force than in the case where there is one pump section 40. Therefore, the leakage of the liquid 38 from the discharge port 31a can be more reliably suppressed.

The 1 st pump section 41 includes, for example, a cylindrical section 45 and a tapered section 46 connected to a tip end side of the cylindrical section 45. The 2 nd pump portion 42 includes, for example, a cylindrical portion 45 and a tapered portion 46 connected to a base end side of the cylindrical portion 45.

In the present embodiment, the cylindrical portion 45 of the 1 st pump portion 41 has, for example, a plurality of (for example, three) pump portion ribs 45c spaced apart from each other in the axial direction of the 1 st pump portion 41.

Similarly, the cylindrical portion 45 of the 2 nd pump portion 42 has, for example, a plurality of (for example, three) pump portion ribs 45c spaced apart from each other in the axial direction of the 2 nd pump portion 42.

In the 1 st liquid flow tube 31, an annular boundary rib 37b is formed on the inner peripheral surface of a portion (constricted portion 37) located at the boundary between the 1 st pump portion 41 and the 2 nd pump portion 42.

That is, the boundary rib 37b protrudes radially inward at a portion located at the boundary between the 1 st pump section 41 and the 2 nd pump section 42.

Thereby, the inner diameter of the 1 st liquid flow tube 31 is locally reduced at the constricted portion 37. That is, the diameter of the constricted portion 37 is smaller than the diameter of the pump portion 40.

In the present embodiment, the inner diameter of the constricted portion 37 is smaller than the inner diameter of the constricted portion 37-side end portion of each of the two pump portions 40 adjacent to each other across the constricted portion 37. That is, the inner diameter of the constricted portion 37 is smaller than the inner diameter at the base end of the cylindrical portion 45 of the 1 st pump portion 41, and the inner diameter of the constricted portion 37 is smaller than the inner diameter at the leading end of the cylindrical portion 45 of the 2 nd pump portion 42.

The boundary rib 37b may extend in the circumferential direction of the 1 st liquid flow pipe 31, and does not necessarily need to be wound 360 degrees in the circumferential direction of the 1 st liquid flow pipe 31. The boundary rib 37b may be an aggregate of a plurality of ribs intermittently arranged in the circumferential direction of the 1 st liquid flow pipe 31.

In the present embodiment, the boundary rib 37b extends around 360 degrees in the circumferential direction of the 1 st liquid flow pipe 31.

The constricted portion 37 is configured to: the outer peripheral surface of the cylindrical main portion 37a is formed with a boundary rib 37b projecting radially inward from the main portion 37 a.

In the present embodiment, the outer diameter of the main portion 45a of the cylindrical portion 45 of the 1 st pump portion 41, the outer diameter of the main portion 37a of the constricted portion 37, and the outer diameter of the main portion 45a of the cylindrical portion 45 of the 2 nd pump portion 42 are equal to each other.

The inside diameter of the main portion 45a of the cylindrical portion 45 of the 1 st pump portion 41, the inside diameter of the main portion 37a of the constricted portion 37, and the inside diameter of the main portion 45a of the cylindrical portion 45 of the 2 nd pump portion 42 are equal to each other.

The inner peripheral surface of the main portion 37a defining the inner diameter of the main portion 37a is not an actual inner peripheral surface, but an imaginary inner peripheral surface of the constricted portion 37 when the boundary rib 37b is removed from the constricted portion 37.

In other words, the boundary rib 37b is a portion that protrudes radially inward of the 1 st pump section 41 and the 2 nd pump section 42 from the inner circumferential surface of the main portion 45a of the cylindrical portion 45 of the 1 st pump section 41 and the 2 nd pump section 42.

Therefore, as shown in fig. 9 (a), the projection height (projection length) H2 of the boundary rib 37b is the projection height of the boundary rib 37b from the inner circumferential surface of the main portion 45a of the cylindrical portion 45 of the 1 st pump portion 41 and the 2 nd pump portion 42.

On the other hand, the projection height of the pump section rib 45c of the 1 st pump section 41 is the projection height of the pump section rib 45c from the inner circumferential surface of the main portion 45a of the cylindrical portion 45 of the 1 st pump section 41. Similarly, the projection height of the pump section rib 45c of the 2 nd pump section 42 is the projection height of the pump section rib 45c from the inner circumferential surface of the main section 45a of the cylindrical section 45 of the 2 nd pump section 42. In the present embodiment, the projection height of the pump section rib 45c of the 1 st pump section 41 and the projection height of the pump section rib 45c of the 2 nd pump section 42 are equal to each other, and are both H1 shown in fig. 9 (a).

Here, the projection height H1 of the pump section rib 45c is smaller than the projection height H2 of the boundary rib 37 b.

In the present embodiment, an example in which the pump section rib 45c is formed on the inner peripheral surface of the pump section 40 is described, but the present invention is not limited to this example, and a rib (the outer peripheral side rib 45b described in embodiment 3) may be formed on the outer peripheral surface of the pump section 40. Further, ribs may be formed on both the outer circumferential surface and the inner circumferential surface of the pump section 40.

The constricted portion 37 is reinforced by a boundary rib 37b (higher than the pump portion rib 45 c). Therefore, the compression ratio at which the constriction portion 37 is compressed by the external pressure (the air pressure in the internal space 21) is smaller than that of the pump portion 40. Therefore, each pump section 40 can be independently reduced and restored, and restoration of each pump section 40 can be promoted by the boundary rib 37 b.

In the present embodiment, the size of the boundary rib 37b in the axial direction of the 1 st liquid flow tube main body 33 is larger than the size of the pump portion rib 45c in the axial direction of the 1 st liquid flow tube main body 33. Therefore, the constricted portion 37 is reinforced more firmly by the boundary rib 37 b.

In the present embodiment, for example, the 1 st pump section 41 and the 2 nd pump section 42 may be configured to have different recovery speeds from each other. That is, the 1 st pump section 41 may be configured to recover faster than the 2 nd pump section 42, or the 2 nd pump section 42 may be configured to recover faster than the 1 st pump section 41.

When the 1 st pump unit 41 is configured to recover faster than the 2 nd pump unit 42 after the introduction of the air into the air chamber 20 is stopped, first, the liquid 38 can be quickly sucked from the discharge port 31a side by the 1 st pump unit 41 arranged closer to the discharge port 31a (the leading end side) out of the 1 st pump unit 41 and the 2 nd pump unit 42, and then the liquid 38 can be further sucked to the base end side by the 2 nd pump unit 42.

For example, by configuring the 2 nd pump unit 42 to be more flexible than the 1 st pump unit 41, the 1 st pump unit 41 can be restored faster than the 2 nd pump unit 42 after the introduction of the air into the air chamber 20 is stopped.

Examples of a method of configuring the 2 nd pump section 42 to be more flexible than the 1 st pump section 41 include a method of forming the 2 nd pump section 42 from a material that is more flexible than the 1 st pump section 41, a method of making molding conditions for the 2 nd pump section 42 and the 1 st pump section 41 different from each other so that the 2 nd pump section 42 is more flexible than the 1 st pump section 41, and a method of making the thickness of the 1 st pump section 41 larger than the thickness of the 2 nd pump section 42.

In the present embodiment, the internal volume of the 2 nd pump section 42 may be larger than the internal volume of the 1 st pump section 41. The internal volume here indicates the internal volume of each pump section 40 in a natural state.

By making the internal volume of the 2 nd pump section 42 larger than the internal volume of the 1 st pump section 41, the liquid 38 pumped by the 1 st pump section 41 can be more reliably pumped by the 2 nd pump section 42.

For example, by making the length dimension in the axial direction of the cylindrical portion 45 of the 2 nd pump portion 42 longer than the length dimension in the axial direction of the cylindrical portion 45 of the 1 st pump portion 41, the internal volume of the entire 2 nd pump portion 42 including the cylindrical portion 45 and the tapered portion 46 can be made larger than the internal volume of the entire 1 st pump portion 41 including the cylindrical portion 45 and the tapered portion 46.

However, the internal volume of the 2 nd pump portion 42 may be made larger than the internal volume of the 1 st pump portion 41 by making the inner diameter of the main portion 45a of the cylindrical portion 45 in the 2 nd pump portion 42 larger than the inner diameter of the main portion 45a of the cylindrical portion 45 in the 1 st pump portion 41.

In the present embodiment, an example in which the number of pump sections included in the 1 st liquid flow tube 31 is two is described, but the present invention is not limited to this example, and the 1 st liquid flow tube 31 may include three or more pump sections.

[ 5 th embodiment ]

Next, embodiment 5 will be described with reference to fig. 10 (a), 10 (b), and 10 (c). Fig. 10 (a) is a perspective view of the distal end side member 70, fig. 10 (b) is a front view showing the distal end portion 52 of the spray unit 10, and fig. 10(c) is a cross-sectional view taken along the line Xc-Xc of fig. 10 (b).

The biological adhesive application tool according to the present embodiment is different from the biological adhesive application tool 100 according to embodiment 1 or the biological adhesive application tools according to embodiments 2 to 4 in the following description, and is otherwise configured similarly to the biological adhesive application tool 100 according to embodiment 1 or the biological adhesive application tools according to embodiments 2 to 4.

As described above, the discharge port 31a is formed at the tip of the 1 st liquid flow pipe 31.

As shown in fig. 10 (a), 10 (b) and 10(c), in the present embodiment, a part of the discharge port 31a in the circumferential direction is formed as a slit-shaped portion 74 that is cut open toward the base end side of the 1 st liquid flow pipe 31 (the base end side of the 1 st discharge pipe 71). The 1 st liquid flow pipe 31 (the 1 st discharge pipe 71) has a through-hole 75 penetrating the inside and outside of the 1 st liquid flow pipe 31 in the vicinity of the base end of the notch-shaped portion 74. The through-hole 75 is formed in a U shape or a V shape, for example, with a semicircular base end portion.

According to the present embodiment, since a part of the discharge port 31a in the circumferential direction is formed as the notch-shaped portion 74, the 1 st liquid flow pipe 31 has an opening (notch-shaped portion 74) at the distal end portion thereof with respect to the gas flow path 23.

Thus, when the gas is ejected from the gas ejection portion 24 through the gas flow channel 23, the gas is introduced into the inside of the distal end portion of the 1 st liquid flow tube 31 through the slit-shaped portion 74. Therefore, the liquid 38 can be blown out from the tip end portion of the 1 st liquid flow pipe 31 by the gas introduced into the 1 st liquid flow pipe 31, and therefore the liquid 38 can be suppressed from remaining in the vicinity of the discharge port 31 a.

Further, since the 1 st liquid flow pipe 31 has the through-hole 75 in the vicinity of the base end of the slit-shaped portion 74, the flow of the liquid 38 can be accelerated by introducing the gas from the through-hole 75 to the tip end portion of the 1 st liquid flow pipe 31, and then the liquid 38 can be blown out from the tip end portion of the 1 st liquid flow pipe 31 by the gas introduced from the slit-shaped portion 74. Therefore, since the separability between the liquid 38 and the discharge port 31a is improved, the liquid 38 can be more reliably prevented from remaining in the vicinity of the discharge port 31 a.

Since a part of the peripheral wall of the 1 st discharge pipe 71 is interposed between the cut-out portion 74 and the through-hole 75, even if the opening (the cut-out portion 74 and the through-hole 75) having a sufficient size is formed in the 1 st discharge pipe 71, the strength of the tip portion of the 1 st liquid flow pipe 31 (the 1 st discharge pipe 71) can be sufficiently ensured. That is, a part of the 1 st discharge pipe 71 located between the notch-shaped portion 74 and the through-hole 75 functions as a reinforcing portion.

The dimensions of the cut-out portion 74 and the through-hole 75 in the circumferential direction of the 1 st discharge pipe 71 may be equal to each other, for example.

The notch-shaped portion 74 is formed in a substantially rectangular shape elongated in the axial direction of the 1 st liquid flow tube 31, for example.

As shown in fig. 10 (b), the opening width of the slit-shaped portion 74 in the circumferential direction of the 1 st discharge pipe 71 is preferably gradually enlarged toward the radially outer side of the 1 st discharge pipe 71. This allows the gas to be introduced from the gas flow channel 23 into the 1 st discharge pipe 71 more smoothly through the slit-shaped portion 74.

Similarly, the opening width of the through-hole 75 in the circumferential direction of the 1 st discharge pipe 71 is preferably gradually increased toward the radial outside of the 1 st discharge pipe 71. This allows gas to be more smoothly introduced from the gas flow channel 23 into the 1 st discharge pipe 71 through the through-hole 75.

Further, the opening width of the through-hole 75 in the axial direction of the 1 st discharge pipe 71 is preferably gradually increased toward the radial outside of the 1 st discharge pipe 71. In particular, at the end portion on the base end side of the through-hole 75, the opening width of the through-hole 75 in the axial direction of the 1 st discharge pipe 71 preferably gradually increases toward the radial outside of the 1 st discharge pipe 71. With this configuration, the gas can be introduced from the gas flow channel 23 into the 1 st discharge pipe 71 more smoothly through the through-hole 75.

As shown in fig. 10 (b), the 2 nd liquid flow pipe 32 (the 2 nd discharge pipe 72) is arranged at a position shifted from a straight line connecting the center of the discharge port 31a and the center of the notch-shaped portion 74 when viewed from the front. For example, the slit-shaped portion 74 is located at a position on the upper left side in the circumferential direction of the discharge port 31a when viewed from the front.

Thus, the liquid 38 blown out from the tip of the 1 st liquid flow pipe 31 is likely to be directed in a direction different from the 2 nd liquid flow pipe 32 side (the 2 nd discharge pipe 72 side), and therefore the liquid 38 can be prevented from adhering to the tip of the 2 nd liquid flow pipe 32.

[ 6 th embodiment ]

Next, embodiment 6 will be described with reference to fig. 11, fig. 12 (a), and fig. 12 (b).

The biological adhesive application tool according to the present embodiment is different from the biological adhesive application tool 100 according to embodiment 1 or the biological adhesive application tools according to embodiments 2 to 5 in the following description, and is otherwise configured similarly to the biological adhesive application tool 100 according to embodiment 1 or the biological adhesive application tools according to embodiments 2 to 5.

As in embodiment 4, the 1 st liquid flow tube 31 includes a plurality of pump sections 40 each including different portions in the axial direction of the 1 st liquid flow tube 31. However, as shown in fig. 11, in the present embodiment, the 1 st liquid flow tube 31 further includes, as the plurality of pump sections 40, a 3 rd pump section 43 disposed upstream of the 2 nd pump section 42 with respect to the specific liquid flow tube (the 1 st liquid flow tube 31).

In the present embodiment, the constriction portion 37 is disposed between the 1 st pump portion 41 and the 2 nd pump portion 42, and between the 2 nd pump portion 42 and the 3 rd pump portion 43, respectively.

In the present embodiment, the 2 nd pump section 42 does not include the tapered section 46, but is constituted by the cylindrical section 45.

The 3 rd pump section 43 has, for example, a cylindrical section 45 and a tapered section 46 connected to the base end side of the cylindrical section 45, as in the 2 nd pump section 42.

In the present embodiment, as in embodiment 3, an outer circumferential rib 45b extending in the circumferential direction of the pump section 40 is formed on the outer circumferential surface of the pump section 40. That is, ribs are formed on both the outer circumferential surface and the inner circumferential surface of the pump section 40.

In the present embodiment, the 1 st liquid flow tube 31 includes three pump sections 40 each having a pump section rib 45c formed on the inner peripheral surface, and therefore the flow of the liquid 38 to the discharge port 31a side can be more appropriately suppressed.

The biological adhesive application tool according to the present embodiment is configured to include, for example: after the introduction of the air into the air chamber 20 is stopped, the 1 st pump section 41 recovers faster than the 2 nd pump section 42, and the 2 nd pump section 42 recovers faster than the 3 rd pump section 43. More specifically, the thickness of the 1 st pump section 41 is made larger than the thickness of the 2 nd pump section 42, so that the 2 nd pump section 42 is configured to be more flexible than the 1 st pump section 41. Further, by making the thickness of the 2 nd pump portion 42 larger than that of the 3 rd pump portion 43, the 3 rd pump portion 43 is configured to be more flexible than the 2 nd pump portion 42.

Accordingly, in the 1 st pump section 41, the 2 nd pump section 42, and the 3 rd pump section 43, first, the liquid 38 is quickly sucked from the discharge port 31a side by the 1 st pump section 41 disposed closer to the discharge port 31a (the tip side), then, the liquid 38 is sucked to the base end side by the 2 nd pump section 42, and the liquid 38 is further sucked to the base end side by the 3 rd pump section 43.

In the present embodiment, the projection height of the pump section rib 45c and the outer circumferential side rib 45b in the 1 st pump section 41 is made larger than the projection height of the pump section rib 45c and the outer circumferential side rib 45b in the 2 nd pump section 42, so that the average thickness of the entire 1 st pump section 41 is made larger than the average thickness of the entire 2 nd pump section 42. Similarly, the average thickness of the entire 2 nd pump portion 42 is made larger than the average thickness of the entire 3 rd pump portion 43 by making the projection heights of the pump portion rib 45c and the outer circumferential side rib 45b in the 2 nd pump portion 42 larger than the projection heights of the pump portion rib 45c and the outer circumferential side rib 45b in the 3 rd pump portion 43.

However, the present invention is not limited to the above example, and the average thickness of the entire 1 st pump portion 41 may be made larger than the average thickness of the entire 2 nd pump portion 42 by setting the arrangement density of the pump portion ribs 45c and the outer circumferential side ribs 45b in the 1 st pump portion 41 higher than the arrangement density of the pump portion ribs 45c and the outer circumferential side ribs 45b in the 2 nd pump portion 42. Similarly, the average thickness of the entire 2 nd pump portion 42 may be made larger than the average thickness of the entire 3 rd pump portion 43 by setting the arrangement density of the pump portion ribs 45c and the outer circumferential side ribs 45b in the 2 nd pump portion 42 higher than the arrangement density of the pump portion ribs 45c and the outer circumferential side ribs 45b in the 3 rd pump portion 43.

Further, the present invention is not limited to the above example, and the thickness of the main portion 45a of the 1 st pump portion 41 may be set larger than the size of the main portion 45a of the 2 nd pump portion 42. The thickness of the main portion 45a of the 2 nd pump portion 42 may be set larger than the size of the main portion 45a of the 3 rd pump portion 43.

In the present embodiment, in the 1 st pump section 41, the projection heights of the pump section ribs 45c are equal to each other. In the 1 st pump section 41, the projecting heights of the outer circumferential ribs 45b are equal to each other. In the 1 st pump section 41, the projection height of the pump section ribs 45c and the projection height of the outer circumferential side ribs 45b are equal to each other, and the arrangement density of the pump section ribs 45c and the arrangement density of the outer circumferential side ribs 45b are equal to each other.

Similarly, in the 2 nd pump section 42, the projection heights of the pump section ribs 45c are equal to each other. In the 2 nd pump section 42, the projecting heights of the outer circumferential ribs 45b are equal to each other. In the 2 nd pump section 42, the projection height of the pump section rib 45c and the projection height of the outer circumferential side rib 45b are equal to each other, and the arrangement density of the pump section ribs 45c and the arrangement density of the outer circumferential side rib 45b are equal to each other.

Similarly, in the 3 rd pump section 43, the projection heights of the pump section ribs 45c are equal to each other. In the 3 rd pump section 43, the projecting heights of the outer circumferential ribs 45b are equal to each other. In the 3 rd pump section 43, the projection height of the pump section rib 45c and the projection height of the outer circumferential side rib 45b are equal to each other, and the arrangement density of the pump section ribs 45c and the arrangement density of the outer circumferential side rib 45b are equal to each other.

Further, the following configuration is also possible: after the introduction of the air into the air chamber 20 is stopped, the 3 rd pump section 43 recovers faster than the 2 nd pump section 42, and the 2 nd pump section 42 recovers faster than the 1 st pump section 41. More specifically, the 3 rd pump section 43 may be made thicker than the 2 nd pump section 42, so that the 2 nd pump section 42 may be configured to be more flexible than the 3 rd pump section 43. Further, the thickness of the 2 nd pump portion 42 may be made larger than the thickness of the 1 st pump portion 41, so that the 1 st pump portion 41 may be configured to be more flexible than the 2 nd pump portion 42.

As shown in fig. 12 (a) and 12 (b), as in embodiment 5, a part of the discharge port 31a in the circumferential direction is formed as a slit-shaped portion 74 that is cut open toward the proximal end side of the 1 st liquid flow pipe 31 (the proximal end side of the 1 st discharge pipe 71). However, in the present embodiment, the notch-shaped portion 74 has a shape that spreads from the proximal end side of the 1 st liquid flow pipe 31 (the proximal end side of the 1 st discharge pipe 71) toward the discharge port 31 a. More specifically, as shown in fig. 12 (a), the V-shape is formed.

According to the present embodiment, since a part of the discharge port 31a in the circumferential direction is formed as the V-shaped notch portion 74 spreading toward the discharge port 31a, the flow rate of the air flow at the most distal end portion of the 1 st liquid flow pipe 31 (the distal end portion of the V-shaped notch portion 74) can be sufficiently ensured. Therefore, the gas can be introduced more smoothly from the gas flow channel 23 into the 1 st liquid flow tube 31 through the notch-shaped portion 74. Therefore, the liquid 38 can be satisfactorily blown out from the tip end portion of the 1 st liquid flow pipe 31 by the gas introduced into the interior of the 1 st liquid flow pipe 31 (the interior of the 1 st discharge pipe 71), and therefore the liquid 38 can be suppressed from remaining near the discharge port 31a, particularly the tip end portion of the discharge port 31 a.

The notch-shaped portion 74 may have a U-shape with a semicircular proximal end portion.

The present invention is not limited to the above embodiments and modifications thereof, and includes various modifications, improvements, and the like within a range in which the object of the present invention can be achieved.

For example, the above description has been given of an example in which the bio-adhesive application tool 100 includes two liquid circulation tubes, and one of the liquid circulation tubes (for example, the 1 st liquid circulation tube 31) is a specific liquid circulation tube having a plurality of pump sections 40. However, the present invention is not limited to this example, and the biological adhesive application tool 100 may include three or more liquid flow tubes, and the number of the specific liquid flow tubes may be two or more. Further, all the liquid flow tubes provided in the biological adhesive application tool 100 may be specific liquid flow tubes.

However, it is preferable that the liquid flow tube through which the high-viscosity liquid containing fibrinogen and the like flows is a specific liquid flow tube.

In the above, the example was described in which the 1 st liquid flow tube 31 is configured by combining a plurality of members (the 1 st liquid flow tube main body 33, the distal end side member 70, and the proximal end side member 60) and the 2 nd liquid flow tube 32 is also configured by combining a plurality of members (the 2 nd liquid flow tube main body 34, the distal end side member 70, and the proximal end side member 60), but each liquid flow tube may be configured by a single member integrally formed.

The above embodiments and modifications can be combined as appropriate within a scope not departing from the gist of the present invention.

The present embodiment includes the following technical ideas.

(1) A biological cement coating tool, comprising:

a gas chamber having a gas introduction portion for introducing a gas and a gas ejection portion for ejecting the gas; and

a plurality of liquid flow pipes which pass through an internal space of the gas chamber and have discharge ports arranged in the vicinity of the gas discharge portion,

the gas ejected from the gas ejection part pushes the liquid ejected from the ejection openings of the liquid flow tubes, thereby spraying and mixing the liquid to be applied to the living tissue,

a specific liquid circulation tube as at least one of the plurality of liquid circulation tubes has a pump portion constituted by a part of the specific liquid circulation tube in an axial direction,

the pump section is compressed by a gas pressure in a state where the gas is introduced into the gas chamber to reduce an inner volume, and is elastically restored when the introduction of the gas into the gas chamber is stopped,

a convex portion is formed on an inner peripheral surface of the pump portion.

(2) The biological cement coating tool according to (1), wherein the projection is a rib extending in a circumferential direction of the pump section.

(3) The biological cement coating tool according to (2), wherein the rib surrounds 360 degrees in the circumferential direction of the pump section.

(4) The biological cement application tool according to (2), wherein the plurality of ribs are arranged intermittently in the circumferential direction of the pump section.

(5) The biological cement application tool according to any one of (2) to (4), wherein the ribs are formed at a plurality of positions in the axial direction of the pump section.

(6) The biological cement application tool according to any one of (1) to (5), wherein the outer peripheral surface of the pump section is formed in a smooth cylindrical shape.

(7) The biological cement coating tool according to any one of (1) to (6), wherein an outer circumferential side rib extending in a circumferential direction of the pump portion is formed on an outer circumferential surface of the pump portion.

(8) The biological cement coating tool according to any one of (1) to (7), wherein,

the discharge port is formed at the front end of the liquid flow pipe,

a part of the discharge port in the circumferential direction is formed as a slit-shaped portion that is cut open toward the base end side of the liquid flow tube,

the liquid flow tube has a through-hole penetrating the inside and outside of the liquid flow tube near the base end of the slit-shaped portion.

Description of reference numerals

10-spray unit, 20-gas chamber, 21-internal space, 22-gas introduction section, 23-gas flow channel, 24-gas ejection section, 25-partition wall section, 31-1 st liquid flow tube (liquid flow tube, specific liquid flow tube), 31 a-discharge port, 32-2 nd liquid flow tube (liquid flow tube), 32 a-discharge port, 33-1 st liquid flow tube body, 33 a-base end section, 33 b-tip end section, 34-2 nd liquid flow tube body, 34 a-base end section, 34 b-tip end section, 35-non-pump section, 35 a-straight tube section, 35 b-tip end section, 36-non-pump section, 36 a-straight tube section, 36 b-base end section, 37-constriction section, 37 a-main section, 37 b-boundary rib, 38, 39-liquid, 40-pump section, 41-1 st pump section, 42-2 nd pump section, 43-3 rd pump section, 45-cylindrical section, 45 a-main section, 45 b-outer circumferential side rib, 45 c-pump section rib (convex section, rib), 451 c-rib, 46-tapered section, 50-chamber body, 51-base end section, 51 a-base end side opening, 52-tip section, 52 a-insertion hole, 52 b-fixed rib, 60-base end side member, 61-body section, 62a, 62 b-syringe mounting section, 63a, 63 b-liquid flow tube mounting section, 64a, 64 b-through hole, 65-partition wall structure section, 70-tip end side member, 71-1 st discharge tube, 71a, 71 b-first discharge tube, and second discharge tube, 72 a-holding part, 71b, 72 b-protrusion, 72-No. 2 discharge tube, 73-coupling part, 74-incision-shaped part, 75-through hole, 80-injection tool, 81-syringe, 82-plunger, 83-plunger holder, 85-air filtration unit, 85 a-coupling part, 90-regulator, 91-air supply tube, 92 a-No. 1 connector, 92 b-No. 2 connector, 100-biocement application tool.

Claims (8)

1. A biological cement coating tool, comprising:

a gas chamber having a gas introduction portion for introducing a gas and a gas ejection portion for ejecting the gas; and

a plurality of liquid flow pipes which pass through the internal space of the gas chamber and have discharge ports arranged in the vicinity of the gas discharge portion,

the gas ejected from the gas ejection part pushes the liquid ejected from the ejection openings of the liquid flow tubes, thereby spraying and mixing the liquid to be applied to the living tissue,

a specific liquid circulation tube as at least one of the plurality of liquid circulation tubes has a pump portion constituted by a part of the specific liquid circulation tube in an axial direction,

the pump section is compressed by a gas pressure in a state where the gas is introduced into the gas chamber to reduce an inner volume, and is elastically restored when the introduction of the gas into the gas chamber is stopped,

a convex portion is formed on an inner peripheral surface of the pump portion.

2. The biological cement coating tool of claim 1,

the projection is a rib extending in the circumferential direction of the pump portion.

3. The biological cement coating tool of claim 2,

the rib encircles 360 degrees in the circumferential direction of the pump section.

4. The biological cement coating tool of claim 2,

the plurality of ribs are arranged intermittently in a circumferential direction of the pump portion.

5. The biological cement coating tool according to any one of claims 2 to 4,

the ribs are formed at a plurality of positions in the axial direction of the pump section.

6. The biological cement coating tool according to any one of claims 1 to 5,

the outer peripheral surface of the pump section is formed in a smooth cylindrical shape.

7. The biological cement coating tool according to any one of claims 1 to 6,

an outer circumferential rib extending in a circumferential direction of the pump portion is formed on an outer circumferential surface of the pump portion.

8. The biological cement coating tool according to any one of claims 1 to 7,

the discharge port is formed at the front end of the liquid flow pipe,

a part of the discharge port in the circumferential direction is formed as a slit-shaped portion that is cut open toward the base end side of the liquid flow tube,

the liquid flow tube has a through-hole penetrating the inside and outside of the liquid flow tube near the base end of the slit-shaped portion.

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