CN114502232B

CN114502232B - Biological cement coating tool

Info

Publication number: CN114502232B
Application number: CN202080068946.5A
Authority: CN
Inventors: 铃木善悦; 金泽尚
Original assignee: Sumitomo Bakelite Co Ltd
Current assignee: Sumitomo Bakelite Co Ltd
Priority date: 2019-10-08
Filing date: 2020-10-07
Publication date: 2024-07-30
Anticipated expiration: 2040-10-07
Also published as: TW202120030A; JP2021058472A; CN114502232A; JP7494459B2; WO2021070852A1

Abstract

The present invention provides a biological cement coating tool, which comprises: a gas chamber having a gas introduction portion for introducing a gas and a gas discharge portion for discharging the gas; and a plurality of liquid flow pipes passing through an inner space of the gas chamber and having discharge ports arranged in the vicinity of the gas discharge portion, wherein the liquid discharged from the discharge ports of the plurality of liquid flow pipes is pushed by the gas discharged from the gas discharge portion, and sprayed and mixed to be applied to a biological tissue, and a specific liquid flow pipe as at least one of the plurality of liquid flow pipes has a pump portion constituted by a part of the specific liquid flow pipe in an axial direction, and the pump portion is compressed by a gas pressure in a state in which the gas is introduced into the gas chamber and has a reduced inner volume, and elastically returns 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 tool for applying a living body cement.

Background

As a living body joining agent applying tool, there is a living body joining agent applying tool provided with a gas chamber having a gas introduction portion and a gas ejection portion, and a plurality of liquid flow pipes penetrating through an inner space of the gas chamber. Each of the liquid flow pipes has a discharge port arranged in the vicinity of the gas discharge portion. The biological cement coating tool is composed of: the liquid discharged from the discharge ports of the liquid flow pipes is pushed by the gas discharged from the gas discharge unit, and the liquid is sprayed and mixed to be applied to the biological tissue.

In such a living body joint compound application tool, there are cases where coagulum of liquid leaking from the discharge port of the liquid flow tube grows.

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

According to the technique of patent document 1, by stopping the discharge of the liquid and stopping the introduction of the gas and then returning the pump unit, the liquid can be sucked from the discharge port side of the liquid flow tube to the pump unit side, and as a result, the phenomenon of the solidification growth of the liquid leaking from the discharge port of the liquid flow tube can be suppressed.

Patent document 1: japanese patent application laid-open No. 2018-201626

Disclosure of Invention

Problems to be solved by the invention

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

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

Means for solving the problems

The present invention provides a biological cement coating tool, which comprises:

A gas chamber having a gas introduction portion for introducing a gas and a gas discharge portion for discharging the gas; and

A plurality of liquid flow pipes passing through the internal space of the gas chamber and having discharge ports arranged in the vicinity of the gas discharge portion,

The liquid discharged from the discharge ports of the plurality of liquid flow pipes is pushed by the gas discharged from the gas discharge portion, and sprayed and mixed to be applied to the biological tissue,

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

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

The pump section has a convex portion formed on an inner peripheral surface thereof.

ADVANTAGEOUS EFFECTS OF INVENTION

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

Drawings

Fig. 1 is a diagram showing the overall structure of the biological cement coating 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 a spray unit of the biological cement coating tool according to embodiment 1.

Fig. 3 is a front view showing a distal end portion of a spray unit of the living body joint compound applicator according to embodiment 1.

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

Fig. 5 (a) and 5 (b) are diagrams showing a specific liquid flow tube of the biological cement applying tool according to embodiment 1, wherein fig. 5 (a) is an enlarged cross-sectional view of the periphery of the pump portion, and fig. 5 (b) is a plan view showing the entire 1 st liquid flow tube body constituting the specific liquid flow tube.

Fig. 6 (a) and 6 (b) are cross-sectional views taken along the VI-VI line in 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 diagrams showing the configuration of the periphery of the pump portion of the specific liquid flow tube of the biological cement coating tool according to embodiment 2, wherein fig. 7 (a) is an enlarged plan view, and fig. 7 (b) is a cross-sectional view taken along the line VIIb-VIIb in fig. 7 (a).

Fig. 8 (a) and 8 (b) are diagrams showing the configuration of the periphery of the pump portion of the specific liquid flow tube of the biological cement applying tool according to embodiment 3, wherein fig. 8 (a) is an enlarged cross-sectional view, and fig. 8 (b) is a cross-sectional view taken along the line VIIIb-VIIIb in fig. 8 (a).

Fig. 9 (a) and 9 (b) are enlarged views showing the configuration of the periphery of the pump portion of the specific liquid flow tube of the biological cement coating tool according to embodiment 4, wherein fig. 9 (a) is a cross-sectional view and fig. 9 (b) is a plan view.

Fig. 10 (a), 10 (b) and 10 (c) are diagrams showing a structure in the vicinity of the distal end of the liquid flow tube of the biological cement applying tool according to embodiment 5, wherein fig. 10 (a) is a perspective view of a 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 the Xc-Xc line in fig. 10 (b).

Fig. 11 is an enlarged cross-sectional view showing the configuration of the periphery of the pump portion of the specific liquid flow tube of the biological cement coating tool according to embodiment 6.

Fig. 12 (a) and 12 (b) are diagrams showing a structure in the vicinity of the distal end of a liquid flow tube of the biological cement coating tool according to embodiment 6, wherein fig. 12 (a) is a perspective view of a 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 (b) in fig. 10.

Detailed Description

Hereinafter, embodiments of the biological cement coating 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 shape, size, arrangement, etc. of the components described below can be changed and modified within the scope not departing from the gist of the present invention.

In all the drawings, the same components are denoted by the same reference numerals, and overlapping description thereof is omitted as appropriate.

Hereinafter, in the biological cement coating 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 living body joint compound 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 directions when the living body cement application tool is manufactured or used.

Unless otherwise specified, the description of the shape of each portion of each liquid flow tube will be given for a shape in a natural state other than a compressed state.

[ Embodiment 1]

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

The left side in fig. 2 is the front, and the right side in fig. 2 is the rear. Fig. 3 shows the front end of the spray unit 10 in a structure of the spray unit 10 seen from the left side in fig. 2. Fig. 5 (a) is a cross-sectional view taken along the axis of the 1 st liquid flow pipe 31.

As shown in any one of fig. 1 to 6 (b), the biological cement coating 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, two liquid flow pipes, namely, a 1 st liquid flow pipe 31 and a 2 nd liquid flow pipe 32, as shown in fig. 2), which pass through the internal space 21 (fig. 2) of the gas chamber 20 and have discharge ports 31a, 32a (fig. 1, 2) arranged near the gas discharge portion 24. The biological cement coating tool 100 is configured to: the liquid 38 and 39 (fig. 3 and 4) discharged from the discharge ports 31a and 32a of the liquid flow pipes (the 1 st liquid flow pipe 31 and the 2 nd liquid flow pipe 32) are pushed by the gas discharged from the gas discharge portion 24, and sprayed and mixed to apply the liquid to the biological tissue.

A specific liquid flow pipe (in this embodiment, the 1 st liquid flow pipe 31) which is at least one of the plurality of liquid flow pipes (the 1 st liquid flow pipe 31, the 2 nd liquid flow pipe 32) has a pump portion 40 (fig. 2, fig. 5 (a), fig. 5 (b)) constituted by a part of the specific liquid flow pipe (the 1 st liquid flow pipe 31) in the axial direction.

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

Further, a convex portion (for example, a pump 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 portion 40.

According to the present embodiment, since the specific liquid flow tube (1 st liquid flow tube 31) has the pump portion 40, the liquid 38 can be sucked from the discharge port 31a side of the specific liquid flow tube to the pump portion 40 side in the process of recovering the pump portion 40 from the compressed state by stopping the introduction of the gas into the gas chamber 20. Therefore, leakage of the liquid 38 from the discharge port 31a can be suppressed.

Further, since the flow of the liquid 38 in the pump portion 40 to the discharge port 31a side can be suppressed by the convex portion (the pump portion rib 45 c) of the inner peripheral surface, the leakage of the liquid 38 from the discharge port 31a can be suppressed more favorably.

Therefore, 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 again introduced into the gas chamber 20 and 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 specific liquid flow pipe.

In addition, when the pump portion 40 is completely compressed by the air pressure, since a part of the inner peripheral surface of the pump portion 40 can be brought into point contact or line contact (non-surface contact) with each other, the adhesion of the parts to each other can be suppressed. Thus, good recovery of the pump portion 40 can be obtained.

As shown in fig. 1, the living body joint compound 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 pipes (in the present embodiment, the 1 st liquid flow pipe 31 and the 2 nd liquid flow pipe 32) inserted into the gas chamber 20 are provided.

In the present embodiment, the living body joint compound 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.

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

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

Another injection tool 80 is used, for example, to inject a liquid 39 containing thrombin or the like into the 2 nd liquid flow tube 32.

The plunger holder 83 is for holding the base end portions of the plungers 82 of the two injection tools 80. A technician using the living body cement coating tool 100 holds the base end portions of the two plungers 82 using the plunger holder 83 and pushes the two plungers 82 into the corresponding syringes 81, respectively, whereby the two plungers 82 can be pushed into the respective syringes 81 in synchronization with each other.

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

By pushing the plunger 82 of the other injection tool 80 into the syringe 81, the liquid 39 is injected into the 2 nd liquid circulation pipe 32, and the liquid 39 is discharged from the discharge port 32a at the front end of the 2 nd liquid circulation pipe 32.

The downstream end of the air filter unit 85 is connected to the base end (upstream end) of the gas introduction portion 22 of the gas chamber 20. The air filter unit 85 has an air filter therein, not shown, for removing impurities in 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 air supply pipe 91 is a flexible pipe. The gas supply pipe 91 is provided at its base end with a1 st connector 92a such as a female connector, and the gas supply pipe 91 is provided at its tip end with a 2 nd connector 92b such as a male connector.

The 1 st connector 92a is connected to the 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 filtering unit 85 are connected to each other via the regulator 90.

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

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 cement coating tool 100, and is introduced into the internal space 21 of the gas chamber 20 from the gas introduction portion 22 via 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 front end portion of the gas chamber 20. The gas discharge 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 discharged from the gas discharge portion 24.

The internal space 21 maintains a pressure higher than the atmospheric pressure during the introduction of the gas from the gas introduction portion 22 into the gas chamber 20.

When the living body joint compound applicator 100 is used, the 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.

As a result, the liquid 38, 39 can be discharged from the discharge ports 31a, 32a of the 1 st liquid flow tube 31 and the 2 nd liquid flow tube 32 while the gas is discharged from the gas discharge portion 24.

Therefore, the liquid 38, 39 discharged from the respective discharge ports 31a, 32a can be pushed by the gas discharged from the gas discharge portion 24, and sprayed and mixed to be applied to the biological tissue.

As shown in fig. 2, the spray unit 10 is configured, for example, as follows: the liquid flow-through device includes a chamber main body 50, a base end side member 60, a tip end side member 70, a1 st liquid flow-through pipe main body 33, and a 2 nd liquid flow-through pipe main body 34, which are described below.

The gas chamber 20 is mainly composed of the chamber body 50 and the base side member 60, the 1 st liquid flow tube 31 is mainly composed of 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 composed of 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, as a bell shape that is flat up and down and tapers toward the front. The inner space of the chamber body 50 constitutes the inner space 21.

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

The chamber body 50 is formed to be symmetrical, for example, left and right, and a portion of the chamber body 50 other than the gas introduction portion 22 is formed to be symmetrical up and down.

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 member 60 includes, for example, a plate-like main body 61, a pair of left and right syringe mounting portions 62a and 62b for mounting (connecting) the syringe 81 of the injection tool 80, a pair of left and right liquid flow tube mounting portions 63a and 63b to which the 1st liquid flow tube main body 33 and the 2 nd liquid flow tube main body 34, which will be described later, are mounted, respectively, at the proximal end portions 33a and 34a, and a partition wall structure 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 main body 61 is attached to the base end 51 so as to close the base end opening 51a of the chamber main body 50.

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

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

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

The base end member 60 has a pair of left and right through holes 64a and 64b formed therein.

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

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

The partition wall structure 65 constitutes the partition wall 25 that partitions the internal space 21 laterally.

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 laterally across the partition wall structure portion 65. Therefore, the gas introduced into the internal space 21 from the gas introduction portion 22 is distributed to 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 front-end member 70 includes, for example, a1 st discharge pipe 71 constituting the front end portion of the 1 st liquid flow pipe 31, a 2 nd discharge pipe 72 constituting the front end portion of the 2 nd liquid flow pipe 32, and a connecting portion 73 connecting 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 formed in a circular tube shape, respectively, and are disposed apart from each other and in parallel to each other.

The connection portion 73 connects, for example, a central portion in the axial direction of the 1 st discharge pipe 71 and a central portion in the axial direction of the 2 nd discharge pipe 72 to each other.

Therefore, for example, the planar shape of the front end member 70 is H-shaped.

In the 1 st discharge pipe 71, a portion protruding toward the base end side from the connection portion 73 is a holding portion 71a for holding the distal end portion 33b of the 1 st liquid flow tube main body 33, and a portion protruding toward the distal end side from the connection portion 73 is a protruding portion 71b.

In the 2 nd discharge pipe 72, a portion protruding toward the base end side from the connecting portion 73 is a holding portion 72a for holding the distal end portion 34b of the 2 nd liquid flow tube main body 34, and a portion protruding toward the distal end side from the connecting portion 73 is a protruding portion 72b.

The discharge port 31a is constituted by an opening at the tip of the 1 st discharge pipe 71, that is, an opening at the tip of the projection 71 b. The discharge port 32a is constituted by an opening at the tip of the discharge pipe 72, that is, an opening at the tip of the protruding portion 72 b.

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

The protruding portions 71b and 72b of the front end member 70 are inserted into the left and right insertion holes 52a from the rear of the front 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 52a.

The protruding portions 71b and 72b protrude slightly forward from the front surface of the front end portion 52.

The connecting 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. Thereby, the rearward displacement of the front end member 70 relative to the front end portion 52 is restricted (that is, the protruding portions 71b, 72b are separated rearward from the respective insertion holes 52 a).

The 1 st discharge pipe 71 and the 2 nd discharge pipe 72 extend in the front-rear direction in the axial direction.

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

The left gas discharge portion 24 is formed by a portion of the opening of the front end of the left insertion hole 52a located around the protruding portion 71 b.

The right gas discharge portion 24 is formed by a portion of the opening of the front end of the right insertion hole 52a located around the protruding portion 72 b.

As shown in fig. 3, a plurality of (for example, four) fixing ribs 52b protruding inward in the radial direction of each of the insertion holes 52a are formed on the inner peripheral surface of each of the insertion holes 52 a. The plurality of fixing ribs 52b of each insertion hole 52a are arranged at predetermined intervals (for example, equiangular intervals) in the circumferential direction of each insertion hole 52 a.

The protruding portion 71b of the 1 st discharge pipe 71 is pressed into the left insertion hole 52a, and each of the fixing ribs 52b of the left insertion hole 52a is pressed against the outer peripheral surface of the protruding portion 71 b.

The protruding portion 72b of the discharge tube 72 of the 2 nd is pressed into the right insertion hole 52a, and each of the fixing ribs 52b of the right insertion hole 52a is pressed against the outer peripheral surface of the protruding portion 72 b.

Accordingly, 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 a gas flow channel 23 (fig. 4) for guiding the gas introduced into the internal space 21 to each gas ejection portion 24.

In the present embodiment, the gas chamber 20 has a left gas flow channel 23 that guides the gas to the left gas ejection portion 24 and a right gas flow channel 23 that guides 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 channel 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 channel 23.

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

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

As described above, since the protruding portions 71b and 72b slightly protrude forward from the insertion hole 52a, the gas discharge portions 24 are disposed 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 connection portion 73 covers, for example, a side surface of the 1 st discharge pipe 71 opposite to the 2 nd discharge pipe 72, and a side surface of the 2 nd discharge pipe 72 opposite to the 1 st discharge pipe 71.

Thus, a narrow gap is formed between the connecting portion 73 and the inner peripheral surface of the chamber body 50 near 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 (that is, the material constituting the chamber body 50, the base end side member 60, and the tip end side member 70) is not particularly limited, and for example, the chamber body 50, the base end side member 60, and the tip end side member 70 are formed of, for example, resin.

The volume of the gas chamber 20 preferably does not substantially change due to the gas pressure in the internal space 21. Therefore, the chamber body 50, the base end member 60, and the tip end member 70 are preferably made of a hard resin.

As shown in fig. 2, the 1 st liquid circulation pipe body 33 and the 2 nd liquid circulation pipe body 34 are tubular members, respectively.

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), for example, by being inserted into the liquid flow tube attachment portion 63a from the outside. 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 being inserted into the holding portion 71a from the outside, for example. 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 tube 31 is constituted by the 1 st liquid flow tube main body 33, the 1 st discharge tube 71, and the through-hole 64a of the base end side member 60.

Similarly, the base end 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 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 being inserted into the holding portion 72a from the outside, for example. 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-through pipe body 34, and the 2 nd discharge pipe 72. The 2 nd liquid flow tube 32 is constituted by the 2 nd liquid flow tube body 34, the 2 nd discharge tube 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 circulation pipe body 33 has a pump portion 40.

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

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

The 1 st liquid flow-through pipe body 33 and the 2 nd liquid flow-through pipe 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 circulation pipe body 33 (1 st liquid circulation pipe 31) is formed partially thinly at the pump portion 40. Therefore, the 1 st liquid flow-through pipe body 33 (although integrally molded from the same material as a whole) is partially and flexibly formed at the pump portion 40. However, the present invention is not limited to this example, and in the 1 st liquid flow pipe 31, the portion constituting the pump portion 40 may be partially made of a softer material than the other portions.

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

The cylindrical portion 45 of the pump portion 40 includes, for example, a cylindrical main portion 45a and pump portion ribs 45c (ribs, protrusions) formed on an inner peripheral surface of the main portion 45 a.

Since the inner diameter and the outer diameter of the main portion 45a are constant, the wall thickness of the main portion 45a is constant.

The pump section ribs 45c extend 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 45 c) extending in the circumferential direction of the pump portion 40.

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

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 that are separated from each other in the axial direction of the pump portion 40. That is, ribs (pump section ribs 45 c) are formed at a plurality of positions in the axial direction of the pump section 40.

The pump section ribs 45c may extend in the circumferential direction of the pump section 40, and do not necessarily need to surround 360 degrees in the circumferential direction of the pump section 40. The pump 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 40.

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

Regarding the tapered portion 46 on the tip end side, for example, the inner diameter tapers toward the tip end side and the outer diameter tapers toward the tip end side, and the wall thickness of the tapered portion 46 gradually increases toward the tip end side.

The inner diameter of the tapered portion 46 on the base end side is tapered toward the base end side, for example. The outer diameter of the tapered portion 46 of the pump portion 40 tapers toward the base end side at the front portion (front 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 surface of the front and rear tapered portions 46 is also formed in a smooth cylindrical shape (a cylindrical shape in which the entirety or a part thereof is tapered).

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

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

The 1 st liquid flow pipe body 33 includes, as the portions other than the pump portion 40, a non-pump portion 35 located on the front end 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 portion 35 located at the front end side of the pump portion 40 includes, for example, a straight tube portion 35a having a straight tube shape connected to the front end side of the tapered portion 46 of the pump portion 40, and a front end portion 35b connected to the front end side of the straight tube portion 35 a.

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

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

The inner and outer diameters of the straight tube portion 35a are equal to those at the front end 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 portion 36 located at the position of the base end side of the pump portion 40 includes, for example, a straight tube portion 36a having a straight tube shape connected to the base end side of the tapered portion 46 of the pump portion 40, and a base end portion 36b connected to the base end side of the straight tube portion 36 a.

The non-pump portion 36 is formed, for example, such that the entire non-pump portion 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 outer diameter of the base end portion 36b is equal to the outer diameter of the straight tube portion 36a at the rear (base end side portion) of the base end portion 36b, and is relatively small at the front (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 with the liquid flow tube mounting portion 63a, and the base end portion 33a is held by the liquid flow tube mounting 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 attachment portion 63a, respectively, and therefore are not substantially compressed by external pressure (air pressure in the internal space 21).

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

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

In the present embodiment, the pump portion 40 is formed partially thinner (the average wall thickness is smaller) than the portion other than the pump portion 40 in the 1 st liquid flow tube main body 33, which is neither the distal end portion 33b nor the proximal end 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 distal end portion 35b is smaller than the outer diameter of the straight tube portion 35 a.

Therefore, as shown in fig. 2, a gap between the outer peripheral surface of the tip portion 33b and the inner peripheral surface of the chamber main body 50 can be sufficiently ensured, and therefore, the gas in the internal space 21 can be smoothly ejected from the gas ejection portion 24 via the gas flow channel 23.

The pump portion 40 is preferably disposed at the front 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 portion 40 side. In the present embodiment, the half portion on the front end side of the 1 st liquid flow-through pipe body 33 includes at least the front end portion of the pump portion 40.

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

The 1 st liquid flow-through pipe body 33 (excluding the plurality of pump portions 40) is formed to have a thicker wall thickness than the 2 nd liquid flow-through pipe body 34, for example. For example, the outer diameter of the 2 nd liquid flow-through tube body 34 is smaller than the outer diameter of the 1 st liquid flow-through tube body 33, and the inner diameter of the 2 nd liquid flow-through tube body 34 is smaller than the inner diameter of the 1 st liquid flow-through tube body 33.

Next, the operation will be described.

When the living body bonding agent applying tool 100 is used, the air filter unit 85 is connected to the gas introduction portion 22, the 2 nd connector 92b of the gas supply pipe 91 is connected to the connection portion 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 end portion 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 end portion of the syringe 81 of the other injection tool 80 is connected to the syringe mounting portion 62 b. In addition, the syringe 81 of one injection tool 80 stores the high-viscosity liquid 38 containing fibrinogen or the like, and the syringe 81 of the other injection tool 80 stores the liquid 39 containing thrombin or 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. This causes the gas to be discharged from each gas discharge unit 24.

Then, with the discharge ports 31a and 32a of the spray unit 10 facing the target living tissue (for example, an organ in the living body), the technician holds the base end portions of the plungers 82 of the two injection tools 80 in a lump using the plunger holder 83, and pushes the two plungers 82 into the corresponding syringes 81, respectively.

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

That is, the liquid 38, 39 is discharged from the discharge ports 31a, 32a simultaneously with the gas being discharged from the gas discharge portions 24.

Accordingly, the liquid 38 discharged from the discharge port 31a can be sprayed mainly by the gas discharged from the gas discharge portion 24 in the vicinity of the discharge port 31a, and the liquid 39 discharged from the discharge port 32a can be sprayed mainly by the gas discharged from the gas discharge portion 24 in the vicinity of the discharge port 32 a. Therefore, the mist-like liquid 38 and the liquid 39 can be mixed and applied to the target living tissue.

The liquid 38 and the liquid 39 formed into mist to be sprayed and mixed function as an adhesive (biological adhesive). That is, fibrinogen is changed into fibrin by thrombin, thereby setting the cement.

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

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

In a state where the pump portion 40 is compressed, as shown in fig. 6 (a), for example, the portions opposing each other are in contact with or close to each other on the cross section of the pump portion 40. Therefore, the internal volume of the pump unit 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 portion 40 returns to the natural shape, i.e., the cylindrical cross-sectional shape as shown in fig. 6 (b) by the elastic restoring force. Therefore, the internal volume of the pump portion 40 is enlarged from the compressed state.

Therefore, the inside of the pump portion 40 is temporarily brought into a negative pressure, and thus the liquid 38 can be sucked from the discharge port 31a side of the 1 st liquid flow tube 31 to the pump portion 40 side. That is, in the process of stopping the introduction of the gas into the gas chamber 20 and returning the pump unit 40 from the compressed state to the natural state, the liquid 38 is sucked from the discharge port 31a side to the pump unit 40 side.

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

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

Therefore, when the gas is introduced again into the gas chamber 20 and the liquids 38 and 39 are discharged from the 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 gas is again introduced into the gas chamber 20 and the liquids 38 and 39 are discharged from the liquid flow pipes, the pump unit 40 is in a compressed state. Therefore, the liquid 38 stored in the pump portion 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 rapidly discharged from the discharge port 31a with good responsiveness.

In the present embodiment, since the convex portion (the pump portion rib 45 c) is formed on the inner peripheral surface of the pump portion 40, the flow of the liquid 38 in the pump portion 40 to the discharge port 31a side can be suppressed by the convex portion. That is, when the pump unit 40 is completely restored to the natural state and the suction force is not effective, a part of the liquid 38 sucked to the pump unit 40 side is caused to flow in the direction of the discharge port 31a by its own weight. However, the pump portion ribs 45c formed on the inner peripheral surface restrict the flow of the liquid 38, and therefore the liquid 38 can be appropriately held in the pump portion 40. That is, leakage of the liquid 38 from the discharge port 31a can be suppressed.

In the present embodiment, the specific liquid flow pipe having the pump 40 is the 1 st liquid flow pipe 31 through which the high-viscosity liquid 38 containing fibrinogen or the like is circulated. Therefore, the viscosity of the liquid 38 can suppress 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 portion 40 by returning the pump portion 40 to the natural state.

Further, since the convex portion is the pump portion rib 45c extending in the circumferential direction of the pump portion 40, the leakage of the liquid 38 from the discharge port 31a can be suppressed more favorably, and the recovery of the pump portion 40 can be promoted by the convex portion.

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

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

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

[ Embodiment 2]

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 unit 40 according to embodiment 2, wherein fig. 7 (a) is an enlarged plan view, and fig. 7 (b) is a cross-sectional view taken along the line VIIb-VIIb in fig. 7 (a).

The biological cement coating tool according to the present embodiment is different from the biological cement coating tool 100 according to embodiment 1 in the following description, and is otherwise configured in the same manner as the biological cement coating tool 100 according to embodiment 1.

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

The plurality of ribs 451c are arranged at equal intervals (equiangular intervals) in the circumferential direction of the pump portion 40, for example.

The number of the ribs 451c intermittently arranged in the circumferential direction of the pump portion 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 portion 40 can be suppressed from flowing toward the discharge port 31a by the convex portion (the pump portion rib 45 c) of the inner peripheral surface, and thus leakage of the liquid from the discharge port 31a can also be suppressed.

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

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

[ Embodiment 3]

Next, embodiment 3 will be described with reference to fig. 8 (a) and 8 (b). Fig. 8 (a) and (b) show the periphery of the pump portion 40 according to embodiment 3, wherein fig. 8 (a) is a cross-sectional view taken along the axis of the 1st liquid flow pipe 31, and fig. 8 (b) is a cross-sectional view taken along the line VIIIb-VIIIb of fig. 8 (a).

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 portion 40 is formed on the outer circumferential surface of the pump portion 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 a plurality.

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

The outer circumferential ribs 45b may extend in the circumferential direction of the pump portion 40, and do not necessarily need to surround 360 degrees 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 portion 40.

In the present embodiment, each outer circumferential side rib 45b surrounds 360 degrees in the circumferential direction of the pump portion 40.

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

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

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

[ Embodiment 4]

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 periphery of the pump portion of the 1 st liquid flow tube 31 of the biological cement coating tool according to embodiment 4, wherein fig. 9 (a) is a cross-sectional view taken along the axis of the 1 st liquid flow tube 31, and fig. 9 (b) is a plan view.

The biological cement coating tool 100 according to the present embodiment is different from the biological cement coating tool 100 according to embodiment 1 in the following description, and is otherwise configured in the same manner as the biological cement coating tool 100 according to embodiment 1.

As shown in fig. 9 (a) and 9 (b), in the present embodiment, the 1 st liquid flow pipe 31 has a plurality of pump portions 40 each constituted by a different portion from each other in the axial direction of the 1 st liquid flow pipe 31. In the present embodiment, the 1 st liquid circulation pipe 31 has, for example, two pump units 40, i.e., a1 st pump unit 41 and a2 nd pump unit 42. The 2 nd pump 42 is disposed upstream (proximal end) of the 1 st liquid flow pipe 31 than the 1 st pump 41.

In the 1 st liquid flow pipe 31, a portion between the plurality of pump portions 40 is formed as a constricted portion 37 having a smaller diameter than the pump portion 40.

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

The 1 st pump portion 41 includes, for example, a cylindrical portion 45 and a tapered portion 46 connected to the distal end side of the cylindrical portion 45. The 2 nd pump portion 42 includes, for example, a cylindrical portion 45 and a tapered portion 46 connected to the 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 that are separated from each other in the axial direction of the 1 st pump portion 41.

Likewise, the cylindrical portion 45 of the 2 nd pump portion 42 has, for example, a plurality of (for example, three) pump portion ribs 45c that are separated from each other in the axial direction of the 2 nd pump portion 42.

In the 1 st liquid circulation pipe 31, an annular boundary rib 37b is formed on the inner peripheral surface of a portion (the constriction 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 portion 41 and the 2 nd pump portion 42.

Thereby, the inner diameter of the 1 st liquid flow tube 31 is partially reduced at the constriction 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 end portion on the constricted portion 37 side of each of the two pump portions 40 adjacent to each other with the constricted portion 37 interposed therebetween. 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 front 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 surround 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 arranged intermittently in the circumferential direction of the 1 st liquid flow pipe 31.

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

The constriction 37 is configured as: comprises a cylindrical main portion 37a and a boundary rib 37b protruding 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 inner diameter of the main portion 45a of the cylindrical portion 45 of the 1 st pump portion 41, the inner diameter of the main portion 37a of the constricted portion 37, and the inner 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 actually existing inner peripheral surface, but an inner peripheral surface of the virtual 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 protruding radially inward of the 1 st pump portion 41 and the 2 nd pump portion 42 than the inner peripheral 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.

Therefore, as shown in fig. 9 (a), the protruding height (protruding length) H2 of the boundary rib 37b is the protruding height of the boundary rib 37b from the inner peripheral 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 protruding height of the pump rib 45c of the 1 st pump portion 41 is the protruding height of the pump rib 45c from the inner peripheral surface of the main portion 45a of the cylindrical portion 45 of the 1 st pump portion 41. Similarly, the protruding height of the pump rib 45c of the 2 nd pump portion 42 is the protruding height of the pump rib 45c from the inner peripheral surface of the main portion 45a of the cylindrical portion 45 of the 2 nd pump portion 42. In the present embodiment, the protruding height of the pump rib 45c of the 1 st pump unit 41 and the protruding height of the pump rib 45c of the 2 nd pump unit 42 are equal to each other, and are both H1 shown in fig. 9 (a).

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

In the present embodiment, the example in which the pump unit ribs 45c are formed on the inner peripheral surface of the pump unit 40 is described, but the present invention is not limited to this example, and ribs (the outer peripheral side ribs 45b described in embodiment 3) may be formed on the outer peripheral surface of the pump unit 40. Ribs may be formed on both the outer peripheral surface and the inner peripheral surface of the pump portion 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 37 is compressed by the external pressure (the air pressure in the internal space 21) is small compared to the pump portion 40. Therefore, each pump section 40 can be individually contracted and restored, and restoration of each pump section 40 can be promoted by the boundary rib 37 b.

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

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

When the introduction of the gas into the gas chamber 20 is stopped and then the 1 st pump portion 41 is returned faster than the 2 nd pump portion 42, the liquid 38 can be first sucked from the discharge port 31a side by the 1 st pump portion 41 arranged closer to the discharge port 31a (the front end side) among the 1 st pump portion 41 and the 2 nd pump portion 42, and then the liquid 38 can be further sucked to the base end side by the 2 nd pump portion 42.

As an example, by configuring the 2 nd pump portion 42 to be softer than the 1 st pump portion 41, the 1 st pump portion 41 can be restored faster than the 2 nd pump portion 42 after stopping the introduction of the gas into the gas chamber 20.

Examples of the method of forming the 2 nd pump portion 42 to be softer than the 1 st pump portion 41 include a method of forming the 2 nd pump portion 42 from a softer material than the 1 st pump portion 41, a method of making molding conditions of the 2 nd pump portion 42 and the 1 st pump portion 41 different from each other in order to make the 2 nd pump portion 42 softer than the 1 st pump portion 41, and a method of making the 1 st pump portion 41 have a wall thickness larger than that of the 2 nd pump portion 42.

In the present embodiment, the internal volume of the 2 nd pump portion 42 may be larger than the internal volume of the 1 st pump portion 41. The internal volume herein means the internal volume when each pump unit 40 is in a natural state.

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

As an 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 inner volume of the 2 nd pump portion 42 may be made larger than the inner 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, the description has been given of an example in which the number of pump units included in the 1 st liquid circulation pipe 31 is two, but the present invention is not limited to this example, and the 1 st liquid circulation pipe 31 may have three or more pump units.

[ Embodiment 5]

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 front end member 70, fig. 10 (b) is a front view of the front end portion 52 of the spray unit 10, and fig. 10 (c) is a cross-sectional view taken along the Xc-Xc line in fig. 10 (b).

The biological cement coating tool according to the present embodiment is different from the biological cement coating tool 100 according to embodiment 1 or the biological cement coating tools according to embodiments 2 to 4 in terms of the following description, and is otherwise configured in the same manner as the biological cement coating tool 100 according to embodiment 1 or the biological cement coating 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. 10a, 10 b, and 10 c, in the present embodiment, a part of the discharge port 31a in the circumferential direction is formed as a notch-shaped portion 74 that is cut toward the base end side of the 1 st liquid flow tube 31 (the base end side of the 1 st discharge tube 71). The 1 st liquid flow tube 31 (1 st discharge tube 71) has a through hole 75 penetrating the inside and outside of the 1 st liquid flow tube 31 near the base end of the notch shape portion 74. The through hole 75 is formed in a U shape or a V shape, for example, in which a base end portion thereof is semicircular.

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 tip end portion of the 1 st liquid flow tube 31 has an opening portion (notch-shaped portion 74) with respect to the gas flow passage 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 cutout portion 74. Therefore, the liquid 38 can be blown out from the tip end portion of the 1 st liquid flow tube 31 by the gas introduced into the 1 st liquid flow tube 31, and thus the liquid 38 can be prevented 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 near the base end of the notch shape portion 74, after the flow of the liquid 38 is accelerated by introducing the gas from the through hole 75 to the tip end portion of the 1 st liquid flow pipe 31, 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 notch shape portion 74. Therefore, the separability of the liquid 38 from the discharge port 31a is improved, and thus, 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 1st discharge pipe 71 is interposed between the notch shape portion 74 and the through-hole 75, even if an opening (notch shape portion 74 and through-hole 75) of a sufficient size is formed in the 1st discharge pipe 71, the strength of the tip end portion of the 1st liquid flow pipe 31 (1 st discharge pipe 71) can be sufficiently ensured. That is, a part of the 1st discharge pipe 71 located between the notch shape portion 74 and the through hole 75 functions as a reinforcing portion.

The size of the cutout shape 74 and the size of the through hole 75 in the circumferential direction of the 1 st discharge pipe 71 may be equal to each other, for example.

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

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 preferably gradually increases toward the radial outside of the 1 st discharge pipe 71. This allows the gas to be more smoothly introduced from the gas flow channel 23 into the 1 st discharge pipe 71 through the notch 74.

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

The opening width of the through hole 75 in the axial direction of the 1 st discharge pipe 71 is also 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 is preferably gradually enlarged toward the radial outside of the 1 st discharge pipe 71. With this configuration, the gas can be more smoothly introduced from the gas flow channel 23 into the 1 st discharge pipe 71 through the through-hole 75.

As shown in fig. 10 b, the 2 nd liquid flow pipe 32 (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 shape portion 74 when viewed from the front. As an example, the notch 74 is located, for example, at a position above and to the left in the circumferential direction of the discharge port 31a when viewed from the front.

As a result, the liquid 38 blown out from the distal end portion of the 1 st liquid flow tube 31 is easily directed in a direction different from the 2 nd liquid flow tube 32 side (the 2 nd discharge tube 72 side), and therefore, the liquid 38 can be prevented from adhering to the distal end portion of the 2 nd liquid flow tube 32.

[ Embodiment 6]

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

The biological cement coating tool according to the present embodiment is different from the biological cement coating tool 100 according to embodiment 1 or the biological cement coating tools according to embodiments 2 to 5 in terms of the following description, and is otherwise configured in the same manner as the biological cement coating tool 100 according to embodiment 1 or the biological cement coating tools according to embodiments 2 to 5.

As in embodiment 4, the 1 st liquid flow pipe 31 has a plurality of pump portions 40 each formed of a different portion from each other in the axial direction of the 1 st liquid flow pipe 31. However, as shown in fig. 11, in the present embodiment, the 1 st liquid circulation pipe 31 further includes, as the plurality of pump units 40, a3 rd pump unit 43 disposed upstream of the 2 nd pump unit 42 with respect to the specific liquid circulation pipe (1 st liquid circulation pipe 31).

In the present embodiment, the constriction 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 portion 42 is constituted by the cylindrical portion 45 without including the tapered portion 46.

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

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

In the present embodiment, since the 1 st liquid circulation pipe 31 includes three pump portions 40 each having the pump portion rib 45c formed on the inner peripheral surface, the flow of the liquid 38 to the discharge port 31a side can be more appropriately suppressed.

The biological cement coating tool according to the present embodiment is configured, for example, as follows: after stopping the introduction of the gas into the gas chamber 20, the 1 st pump section 41 is restored faster than the 2 nd pump section 42, and the 2 nd pump section 42 is restored faster than the 3 rd pump section 43. More specifically, the 1 st pump portion 41 has a larger wall thickness than the 2 nd pump portion 42, whereby the 2 nd pump portion 42 is configured to be softer than the 1 st pump portion 41. Further, the wall thickness of the 2 nd pump portion 42 is made larger than the wall thickness of the 3 rd pump portion 43, whereby the 3 rd pump portion 43 is made softer than the 2 nd pump portion 42.

In this way, among the 1 st, 2 nd, and 3 rd pump portions 41, 42, and 43, the liquid 38 can be first rapidly sucked from the discharge port 31a side by the 1 st pump portion 41 disposed closer to the discharge port 31a (front end side), then the liquid 38 can be sucked to the base end side by the 2 nd pump portion 42, and the liquid 38 can be further sucked to the base end side by the 3 rd pump portion 43.

In the present embodiment, the average wall thickness of the entire 1 st pump portion 41 is made larger than the average wall thickness of the entire 2 nd pump portion 42 by making the protruding heights of the pump portion ribs 45c and the outer peripheral side ribs 45b in the 1 st pump portion 41 larger than the protruding heights of the pump portion ribs 45c and the outer peripheral side ribs 45b in the 2 nd pump portion 42. Similarly, by making the protruding heights of the pump portion ribs 45c and the outer peripheral side ribs 45b in the 2 nd pump portion 42 larger than the protruding heights of the pump portion ribs 45c and the outer peripheral side ribs 45b in the 3 rd pump portion 43, the average wall thickness of the entire 2 nd pump portion 42 is made larger than the average wall thickness of the entire 3 rd pump portion 43.

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

Further, the wall 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 wall 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 protruding heights of the pump section ribs 45c are equal to each other. In the 1 st pump section 41, the protruding heights of the outer circumferential side ribs 45b are equal to each other. In the 1 st pump unit 41, the protruding height of the pump unit ribs 45c and the protruding height of the outer circumferential side ribs 45b are equal to each other, and the arrangement density of the pump unit ribs 45c and the arrangement density of the outer circumferential side ribs 45b are equal to each other.

Similarly, in the 2 nd pump portion 42, the protruding heights of the pump portion ribs 45c are equal to each other. In the 2 nd pump portion 42, the protruding heights of the respective outer peripheral side ribs 45b are equal to each other. In the 2 nd pump portion 42, the protruding height of the pump portion rib 45c and the protruding height of the outer circumferential side rib 45b are equal to each other, and the arrangement density of the pump portion rib 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 protruding heights of the pump section ribs 45c are equal to each other. In the 3 rd pump portion 43, the protruding heights of the respective outer circumferential side ribs 45b are equal to each other. In the 3 rd pump unit 43, the protruding height of the pump unit ribs 45c and the protruding height of the outer peripheral side ribs 45b are equal to each other, and the arrangement density of the pump unit ribs 45c and the arrangement density of the outer peripheral side ribs 45b are equal to each other.

In addition, the structure may be as follows: after stopping the introduction of the gas into the gas chamber 20, the 3 rd pump portion 43 is restored faster than the 2 nd pump portion 42, and the 2 nd pump portion 42 is restored faster than the 1 st pump portion 41. More specifically, the 3 rd pump portion 43 may be formed to have a larger wall thickness than the 2 nd pump portion 42, so that the 2 nd pump portion 42 is softer than the 3 rd pump portion 43. Further, the 1 st pump portion 41 may be formed to be softer than the 2 nd pump portion 42 by making the wall thickness of the 2 nd pump portion 42 larger than the wall thickness of the 1 st pump portion 41.

As shown in fig. 12 (a) and 12 (b), a part of the discharge port 31a in the circumferential direction is formed as a cutout shape 74 cut toward the base end side of the 1 st liquid flow tube 31 (the base end side of the 1 st discharge tube 71) in the same manner as in embodiment 5. However, in the present embodiment, the notch 74 is formed to extend from the base end side of the 1 st liquid flow tube 31 (the base end side of the 1 st discharge tube 71) toward the discharge port 31 a. More specifically, the structure is formed in a V shape as shown in fig. 12 (a).

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

The cutout portion 74 may have a U-shape with a semicircular base end.

The present invention is not limited to the above-described embodiments and modifications thereof, and includes various modifications and improvements within a range that can achieve the object of the present invention.

For example, in the above description, an example is described in which the number of liquid flow pipes provided in the living body joint compound application tool 100 is two, and one of the liquid flow pipes (for example, the 1 st liquid flow pipe 31) is a specific liquid flow pipe having a plurality of pump portions 40. However, the present invention is not limited to this example, and the living body joint compound application tool 100 may be provided with three or more liquid flow tubes, and the number of specific liquid flow tubes may be two or more. Further, all the liquid flow pipes included in the living body bonding agent applying tool 100 may be specific liquid flow pipes.

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

In the above description, the 1 st liquid flow pipe 31 is constituted by combining a plurality of members (the 1 st liquid flow pipe body 33, the front end side member 70, and the base end side member 60), and the 2 nd liquid flow pipe 32 is constituted by combining a plurality of members (the 2 nd liquid flow pipe body 34, the front end side member 70, and the base end side member 60), but each liquid flow pipe may be constituted by a single member integrally formed.

The above embodiments and modifications can be appropriately combined within a range not departing from the gist of the present invention.

The present embodiment includes the following technical ideas.

(1) A biological cement coating tool is provided with:

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

(2) The living body bonding agent applying tool according to (1), wherein the convex portion is a rib extending in a circumferential direction of the pump portion.

(3) The living body bonding agent applying tool according to (2), wherein the rib surrounds 360 degrees in a circumferential direction of the pump portion.

(4) The living body bonding agent applying tool according to (2), wherein the plurality of ribs are intermittently arranged in the circumferential direction of the pump section.

(5) The tool for applying a living body bonding agent 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 tool for applying a living body bonding agent according to any one of (1) to (5), wherein an outer peripheral surface of the pump portion is formed in a smooth cylindrical shape.

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

(8) The tool for applying a living body cement according to any one of (1) to (7), wherein,

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

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

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

Description of the reference numerals

10-Spraying unit, 20-gas chamber, 21-internal space, 22-gas introduction portion, 23-gas flow passage, 24-gas discharge portion, 25-partition wall portion, 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 main body, 33 a-base end portion, 33 b-front end portion, 34-2 nd liquid flow tube main body, 34 a-base end portion, 34 b-front end portion, 35-non-pump portion, 35 a-straight tube portion, 35 b-front end portion, 36-non-pump portion, 36 a-straight tube portion, 36 b-base end portion, 37-constriction portion, 37 a-main portion, 37 b-boundary rib, 38, 39-liquid, 40-pump portion, 41-1 st pump portion, 42-2 nd pump portion, 43-3 rd pump portion, 45-cylinder portion, 45 a-main portion, 45 b-outer peripheral side rib, 45 c-pump portion rib (projection, rib), 451 c-rib, 46-taper portion, 50-chamber body, 51-base end portion, 51 a-base end side opening, 52-front end portion, 52 a-insertion hole, 52 b-fixing rib, 60-base end side member, 61-main body portion, 62a, 62 b-syringe mounting portion, 63a, 63 b-liquid circulation tube mounting portion, 64a, 64 b-through hole, 65-partition wall structure portion, 70-front end side member, 71-1 st discharge tube, 71a, 72 a-holding portion, 71b, 72 b-protruding portion, 72-2 nd discharge tube, 73-connecting portion, 74-cutout shape portion, 75-through hole, 80-injection tool, 81-syringe, 82-plunger, 83-plunger holder, 85-air filtration unit, 85 a-connecting portion, 90-regulator, 91-air supply tube, 92 a-1 st connector, 92 b-2 nd connector, 100-biological cement application tool.

Claims

1. A biological cement coating tool is provided with:

The pump part has a convex part formed on an inner peripheral surface thereof,

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

2. The tool for applying a living body cement according to claim 1, wherein,

The opening width of the through hole in the circumferential direction of the liquid flow pipe gradually expands toward the radially outer side of the liquid flow pipe.

3. The tool for applying a living body cement according to claim 1 or 2, wherein,

At the end portion on the base end side of the through hole, the opening width of the through hole in the axial direction of the liquid flow tube gradually increases toward the radially outer side of the liquid flow tube.

4. A biological cement coating tool is provided with:

The pump part has a convex part formed on an inner peripheral surface thereof,

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

The notch shape portion is formed to expand toward the front end side of the liquid flow tube.

5. The tool for applying a living body cement according to claim 1 or 4, wherein,

The slit-shaped portion is elongated in the axial direction of the liquid flow tube.

6. The tool for applying a living body cement according to claim 1 or 4, wherein,

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

7. The tool for applying biological cement according to claim 6, wherein,

The rib surrounds 360 degrees in the circumferential direction of the pump portion.

8. The tool for applying biological cement according to claim 6, wherein,

The plurality of ribs are arranged intermittently in the circumferential direction of the pump section.

9. The tool for applying biological cement according to claim 6, wherein,

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

10. The tool for applying a living body cement according to claim 1 or 4, wherein,

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

11. The tool for applying a living body cement according to claim 1 or 4, wherein,

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