JPH09192214A - Medical suction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the insides of internal organs from being damaged by edges by enabling the operation of washing the insides of cystomas and that of repeating suction and washing to be performed while the end of an outer cylinder is brought into close contact with an internal organ. SOLUTION: A sucking part 104 formed using a soft resin is mounted on the end of an outer cylinder 101 a having in its side wall a suction connecting hole 106 used exclusively for suction, and suction is effected through the internal space of the sucking part 104 while enhancing closeness to the wall of a cystoma. A catheter 102a, supported on a catheter base 109 to which a three-way active plug 111 and connecting holes 110, 113 are assembled, is inserted into the outer cylinder 101a. The rear end of the catheter can be secured to an outer-cylinder unit 101, in such a way that it can be freely positioned, by a fastening adapter 107 provided at the rear end of an outer-cylinder support 105. A needle tube having an edge 115 at its end is inserted into the catheter 102a. The needle tube is used only for piercing internal organ walls.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to medical devices, especially
The present invention relates to a medical suction device for sucking a liquid in a cyst of an organ.

[0002]

2. Description of the Related Art In endoscopic surgery for various organs such as the ovary and gallbladder, a puncture needle has been conventionally used. The puncture needle is pierced into the organ and the cyst content liquid is sucked through the puncture needle. There is. However, it is difficult to puncture with this puncture needle. Further, usually, puncture is performed while grasping the cyst with forceps, but in the case of an enlarged cyst, the cyst may rupture and the content fluid may leak.

Therefore, in order to facilitate the puncture and prevent the liquid content from leaking, a suction tube forming an outer cylinder and a suction needle inserted into the suction tube are made of a metal having a double structure. Suction devices are commercially available. FIG. 10 is a front view showing a configuration of a conventional medical suction device having a double structure.
The medical suction device 200 includes an outer cylinder 20 having a configuration shown in FIG.
1 (suction tube) and an inner needle 202 having a structure shown in FIG. The outer cylinder 201 is made of metal and has a pipe shape as shown in FIG. 11, and both ends thereof are open. A short cylindrical suction adapter 203 is fitted on one end of the outer cylinder 201. A cylindrical, small-diameter connection port 204 communicating with the inside of the outer cylinder 201 is attached to the suction adapter 203.

As shown in FIG. 12, the inner needle 202 is elongated and mainly comprises a hollow pipe 205 (suction needle). Cutting edge 20 formed at the tip of the pipe 205
6 is obliquely cut so as to easily puncture the organ.
An inner needle base 207 is attached to the rear end of the pipe 205. The inner needle base 207 has a gentle taper so that the inner diameter increases toward the rear end. Inner needle base 207
Is connected to a connection port 209 provided with a cock 208 on the way. The cock 208 can be rotated (manually performed) in a range of 90 degrees, and when turned to one side, the pipe 205 and the connection port 209 communicate with each other, and when turned to the other side, the inside of the pipe 205 and the connection port 209 are connected. Communication is cut off.

When the inner needle 202 is inserted into the outer cylinder 201, a gap is created between the outer cylinder 201 and the inner needle 202, and the contents of the sucked cyst will leak out. Therefore, as shown in FIGS. 10 and 11, a packing 210 is provided at the connecting portion between the outer cylinder 201 and the inner needle base 207. When the inner needle 202 is inserted into the outer cylinder 201 and the inner needle base 207 is positioned and fixed so as to press the packing 210, the cutting edge 206 is exposed from the tip portion 201a of the outer cylinder 201. Then, in this state, a cylindrical void is formed between the outer cylinder 201 and the inner needle 202. The rear end of this space is sealed by packing 210 and communicates with the connection port 204.

When using the suction device having the above-described structure, a drain tube for surgery is connected to the connection port 204, and a washing / suction tube is connected to the connection port 209. The outer cylinder 201 is held in the hand, and the cutting edge 206 is inserted into the affected part (cyst part), and the tip part 201a is brought into close contact with the outer wall surface of an organ or the like. In this state, the cock 208 is opened, the suction means (not shown) is operated, the cyst content liquid is sucked through the inner needle 202, and the cyst content liquid is discharged from the connection port 209. At the same time, the cyst content liquid leaking from the puncture hole is sucked from the tip portion 201a into the tubular space inside the outer cylinder 201, and the cyst content liquid is discharged through the connection port 204.

[0007]

However, according to the conventional medical suction device, since the outer cylinder is made of metal, it is difficult to make the entire circumference of the distal end of the outer cylinder closely adhere to the organ, and the liquid containing the cyst is sucked. The close contact state cannot follow the contraction of the organ due to, the contact failure with the organ occurs during suction, and the content liquid is likely to be scattered. In particular, when the cyst to be aspirated is likely to be malignant, it cannot be used because the risk of scattering of the content liquid is high.

[0008] Further, there is an inconvenience that it is impossible to wash the inside of the cyst, repeat suction and washing, and fix the alcohol. Furthermore, in the case of chocolate cysts, it is desirable to thicken the inner needle because it has high viscosity, but if the inner needle is thicker, puncture resistance increases and it becomes difficult to puncture. For this reason, the inner needle cannot be thickened, and the thin inner needle has to be used for suction over a long time.

Further, since the content liquid of the cyst is sucked by the inner needle (suction needle), the inside of the organ may be damaged by the cutting edge of the inner needle during suction. For this reason, complete suction of the content liquid could not be performed. Therefore, it is an object of the present invention to provide a medical suction device which has improved adhesion to an organ and can efficiently suck the content liquid of the cyst without damaging the inside of the organ.

Another object of the present invention is to provide a medical suction device which can be used by alternately repeating suction and washing.

[0011]

In order to achieve the above object, the present invention has a cylindrical outer cylindrical body, a suction-only connection port provided on a side wall of the outer cylindrical body, and flexibility. A suction member that is made of a material and has a cylindrical shape, and is attached to the suction-side tip of the outer cylinder, is loosely fitted to the outer cylinder so that a predetermined gap is created in the radial direction, and A catheter for performing suction, a needle tube detachably inserted into the catheter for puncturing the organ with a sharply processed tip, a base body for supporting the rear end of the catheter, and a rear end of the catheter. The structure is provided with a fixing means that moves and detachably holds the outer cylinder at an arbitrary position, and at least one connection port for cleaning or suction provided at the rear end of the base body.

According to this structure, since the suction member attached to the tip of the outer cylinder has flexibility, it can easily and surely adhere to the cyst wall of the organ. Further, the suction portion of the suction device has a double structure of an outer cylinder and a catheter, and the gap formed between the two forms an initial suction passage when the suction member is sucked onto the cyst wall. . Then, the needle tube after forming the puncture hole can be extracted from the catheter, whereby a suction tube is formed only by the catheter, and a connection port for washing etc. is left in the catheter, so that the inner wall of the cyst wall is Aspirate the cyst content liquid without damaging it,
Alternatively, cleaning can be performed.

As a result, according to the suction device having the above structure,
When sucking the cyst content liquid, the suction member can be surely brought into close contact with the cyst wall, so that the leakage of the cyst content liquid from the suction member can be reliably prevented. In addition, repeated washing and suction operations and alcohol fixation are possible. Furthermore, since the cyst content liquid is sucked (or washed) without using a needle tube, even a content liquid such as a highly viscous chocolate cyst can be efficiently sucked.

The fixing means having the above structure can be a screw coupling tightening adapter with a built-in sealing member. With this configuration, the relative position between the outer cylinder unit including the outer cylinder body and the inner cylinder unit including the catheter can be arbitrarily set, and reliable fixing and separation operation can be performed in a short time.

The above-mentioned object is to make a cylindrical outer cylinder, a connection port for suction provided on the side wall of the outer cylinder, and a cylindrical material using a flexible material, and A suction member attached to the tip on the suction side, a hollow catheter loosely fitted to the outer cylinder so that a predetermined gap is formed in the radial direction, and detachably inserted into this catheter and sharply processed. A needle tube that punctures the organ at the tip, and a close contact auxiliary member that is formed or provided at the tip of the catheter and that presses the wall body from the inside to the suction member after the tip of the catheter enters the organ. A base having a hollow portion communicating with the hollow portion of the catheter and supporting the rear end of the catheter, and a fixing for removably holding the rear end of the catheter to the outer cylinder body at an arbitrary position. After the means and the substrate Provided parts, is also achieved by a configuration that includes at least one cleaning or suction connection port communicating with the hollow portion of said substrate.

According to this structure, since the suction member attached to the distal end of the outer cylinder has flexibility, it easily and surely adheres to the cyst wall of the organ. Further, the suction part of the suction device has a double structure of an outer cylinder and a catheter, whereby a gap formed between the two forms a suction passage, and punctures when the suction member is sucked onto the cyst wall. It becomes possible to aspirate the cystic fluid leaking from the hole. Further, the adhesion assisting member provided at the distal end portion of the catheter acts so as to press the cyst wall against the suction member from the inside. As a result, according to the suction device having the above-mentioned configuration, when sucking the cyst content liquid, the suction member can be surely brought into close contact with the cyst wall, so that the leakage of the cyst content liquid from around the suction member can be reliably prevented, and Repeated washing and suction operations and alcohol fixation are also possible.

In the above structure, the adhesion aiding member may be a balloon-shaped or hollow donut-shaped swelling member that is swelled before puncturing and is swellable after puncturing.
According to this configuration, before the puncture, the cutting edge of the needle tube does not hinder the insertion into the cyst wall and can be swollen after the puncture, so that the cyst wall can be reliably pressed against the suction member,
Moreover, it does not damage the organs. Therefore, the adhesion between the cyst wall and the suction member can be significantly improved.

Alternatively, the adhesion assisting member may be a expanding / contracting member which is made of a material having a shape memory property and which has a pigtail shape when not constrained and is linearly deformed when constrained. According to this configuration, after the cutting edge of the needle tube has penetrated the cyst wall, the adhesion auxiliary member that has entered the organ together with the needle tube gradually begins to curl as the adhesion auxiliary member is pulled out as the inserted needle tube is removed. Eventually it becomes a pigtail shape. Since this arc portion has elasticity, it becomes a kind of coil spring, and the upper end portion pushes up the inner surface of the cyst wall to bring the cyst wall into close contact with the suction member. Therefore, the adhesion between the cyst wall and the suction member can be significantly improved.

Further, the contact assisting member may be made of a material having a shape memory property, and may be a structure which swells in the radial direction when not constrained and deforms into a contact state with the needle tube when constrained. According to this configuration, after the cutting edge of the needle tube penetrates the cyst wall, the adhesion assisting member that has entered the organ together with the needle tube shrinks the tip part as the inserted needle tube is withdrawn, and is in close contact with the needle tube. The structure that had become swelling gradually began to expand in the diameter direction of the needle tube, and finally the three-dimensional object was attached to the needle tube. Since this three-dimensional object has a proper elasticity, it becomes a kind of air spring or link combination,
The upper end portion pushes up the inner surface of the cyst wall to bring the cyst wall into close contact with the suction member. Therefore, the adhesion between the cyst wall and the suction member can be significantly improved.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a medical suction device according to the present invention. The medical suction device 100 according to the present invention includes an outer cylinder unit 101 having the structure shown in FIG. 2 and an inner cylinder unit 102 having the structure shown in FIG. 3 inserted into the outer cylinder unit 101. As shown in FIG. 2, the outer cylinder unit 101 is mainly composed of a cylindrical outer cylinder 101a. The outer cylinder 101a is formed into a pipe shape using stainless steel or the like, and both ends thereof are open.
A connector 103 having an outer diameter substantially the same as that of the outer cylinder 101a is attached to the tip of the outer cylinder 101a.

Further, a part of the adsorbing member 104 made of a material having the characteristics of flexibility and good adhesion to an organ is externally fitted to the tip of the connector 103, and has a length of about half. The tip is unconstrained so that it flexes freely according to the contact pressure. By mounting the suction member 104 via the connector 103, it is possible to easily replace the suction member 104, which is faster to replace than other components.

The adsorbing member 104 is formed by molding using, for example, silicon resin, fluororesin, various kinds of elastomers, or the like. By changing the diameter and shape of the suction member 104 and the wall thickness of the tip portion, more flexible and strong suction performance can be obtained. The suction member 10
No. 4 has a structure in which the distal end part bulges out slightly with respect to the fixed part so that it easily bends when it comes into contact with the cyst wall, thereby improving adhesion.

At the other end of the outer cylinder 101a, the outer cylinder 10
A tip of an outer cylinder supporting portion 105 (for example, made of brass and having a nickel-plated surface) is connected to the outer cylinder supporting portion 105 having a size slightly shorter than 1a (the outer cylinder supporting portion 105 is combined with the outer cylinder 101a to form an outer member). Forming a cylinder). This outer cylinder support portion 105
Has the function of controlling the tip position of the cutting edge from outside the abdominal cavity. Furthermore, a suction connection port 106 (suction connection port) is provided upright on the side wall surface of the outer cylinder support portion 105 near the tip, and the inserted catheter 102a can be supported at an arbitrary position on the rear end portion. A tightening adapter 107 (forming a fixing means together with a built-in sealing member) is attached to the.

As shown in FIG. 3, the inner cylinder unit 102
Is a needle tube 108 made of a metal such as stainless steel into a thin tube,
The catheter 102a fitted onto the needle tube 108, the catheter base 109 as a base body having a tapered structure and attached to the rear end of the catheter 102a, the catheter base 1
Connection port 110 attached to the rear end of 09, this connection port 11
Three-way stopcock 111 provided in the middle of 0, this three-way stopcock 1
Handle 11 for selecting each connection port communicating with 11
2, a connection port 113 that is provided at a right angle to the site where the three-way stopcock 111 of the connection port 110 is provided, and a needle base 114 that is attached to the rear end of the connection port 110 and supports the rear end of the needle tube 108. Is configured. Here, the catheter 102a is made of polyethylene or the like, and the catheter base 109 is made of resin. The needle tube 10
Since No. 8 is used only for forming a puncture hole and suction is not performed, it can be manufactured using, for example, a solid rod made of a stainless material.

Further, the tip of the needle tube 108 is processed into an acute angle so as to easily puncture an organ, and a cutting edge 115 is formed by this. At the tip of the catheter 102a, a taper portion 116 whose outer diameter is gradually reduced toward the tip is formed to reduce puncture resistance. Also,
When the inner cylinder unit 102 is inserted into the outer cylinder 101a and the outer cylinder support portion 105 at the root of the catheter base 109,
A scale 125 is provided to grasp the insertion amount.

The handle 112 of the three-way stopcock 111 can be set at three positions, and is switched according to suction and washing of the cyst content liquid. The first is a position communicating with the connection port 113 (the position where the handle 112 faces the connection port 110), and the second is a position communicating with the connection port 110 (the position where the handle 112 faces the connection port 113). Third
Is an off position (the position where the handle 112 faces the catheter base 109) that does not communicate with either the connection port 113 or the connection port 110. These positions can be selected by rotating the handle 112 every 90 degrees.

FIG. 4 is a sectional view showing the details of the connecting portion between the outer cylinder supporting portion 105 and the tightening adapter 107. The outer cylinder support portion 105 and the tightening adapter 107 are screwed together so that they can be attached and detached. For this reason, the meshing portion is threaded 124. The tightening adapter 1 so that the tightening adapter 107 can be mounted with a certain width.
A concave groove 107a is provided inside 07, and the rear end portion 105a of the outer cylinder supporting portion 105 is fitted therein. Then, in order to prevent the cyst content liquid from leaking from the joint portion, a cylindrical packing 107 is provided inside the rear end portion 105a.
b is fitted inside, and the inner tip of the concave groove 107a can be pressed against the rear end of the packing 107b.

When using the suction device 100 having the above structure, the catheter 102a and the catheter base 10 are used.
9 and the first unit including the three-way stopcock 111,
A second unit in which the needle tube 108 is attached to the needle base 114 is assembled to complete the inner cylinder unit 102. Then
The inner cylinder unit 10 includes an outer cylinder 101a, an outer cylinder supporting portion 105, and a tightening adapter 107.
Insert 2.

At this time, the inner cylinder unit 102 is positioned so that the blade edge 115 does not protrude from the suction member 104, and then fixed by the tightening adapter 107. In this state, a space is formed between the outer cylinder 101a and the inner cylinder unit 102, one end of which communicates with the outside (in the vicinity of the cutting edge 115). The other end of this space is sealed by the tightening adapter 107, but communicates with the suction connection port 106. In this state, an unillustrated surgical drain tube (a suction means such as a suction pump is connected to the end) is connected to the suction connection port 106. In this state, the cyst wall of the organ is punctured to suck and wash the cyst content liquid. The procedure will be described below.

(I) First, the assembled medical suction device 100 is inserted into the abdominal cavity from the trocar and brought into close contact with the cyst wall surface of the organ. FIG. 5 shows this state. By pressing the medical suction device 100 against the surface of the cyst wall 117 (the cyst content liquid 118 is present inside), the distal end surface of the flexible suction member 104 is brought into close contact with the cyst wall 117. Even if the cyst wall 117 has irregularities, the suction member 10 will follow the irregular shapes.
Since the tip end surface of 4 is freely deformed, the suction member 104 can be surely brought into close contact. The space 119 formed in the suction member 104 communicates with the gap 120 formed between the outer cylinder unit 101 and the inner cylinder unit 102.

(Ii) Next, after the puncture position is determined and the handle 112 is set to the off position, suction is started from the inside of the suction member 104 through the suction connection port 106. Due to this suction, a negative pressure is formed in the space 119 and the gap 120, and the tip surface (circumferential surface) of the suction member 104 and the cyst wall 1 are formed.
17 is in a more closely contacted state. (Iii) While performing this suction, tightening adapter 107
To move the inner cylinder unit 102 forward from the outer cylinder unit 101.
It is made to protrude in the range of 100 mm) and inserted into the wall of the cyst to form a puncture hole. FIG. 6 shows this state.

(Iv) After this puncture, the needle tube 108 is pulled out from the inner cylinder unit 102 (with the needle base 114) so as not to damage the inner wall of the organ during the subsequent work, and the catheter is inserted into the cyst wall. Only 102a is left. In this state, the catheter 102a and the connection port 11
0 becomes a state in which communication is possible. (V) Next, a syringe or a drain tube (neither is shown) is connected to the connection port 110 (the female luer taper portion), and the handle 112 is rotated toward the connection port 113. Then, suction of the cyst content liquid is started through the catheter 102a. At this time, the tapered portion 116 or the catheter 1
Even if the cyst content liquid 118 leaks from around 02a (that is, the inner peripheral surface of the puncture hole), the space 119 and the gap 12
It is sucked by a negative pressure of 0, and is sucked from the suction connection port 106 through the gap 120.

As described above, in the suction device 100 of the present invention, since the close contact with the surface of the cyst wall 117 is performed via the adsorption member 104, the cyst content liquid 118 that has flowed out of the cyst wall 117 surely becomes a gap. It is sucked into 120 and does not leak from the suction part. (Vi) In addition, in order to perform cleaning, the suction from the suction connection port 110 is stopped, and the handle 112 is rotated to rotate the connection port 110.
The connection port 113 and the catheter base 109 are made to communicate with each other according to the direction of. Then, a cleaning solution (physiological saline solution, alcohol, etc.) is fed into the medical suction device 100 from the connection port 113, and then the handle 112 is switched to perform suction, or the handle 112 is switched to perform cleaning and suction alternately. Is repeatedly executed.

FIG. 7A is a sectional view showing the structure (main part) of the second embodiment of the medical suction device according to the present invention. In FIG. 7 (a), the same reference numerals are used for the same elements as those in FIG. 6, and thus duplicated description will be omitted below. In the configuration of FIG. 6, the adhesion is secured by using the pressed state of the suction member 104 and the negative pressure at the time of suction. However, if the medical suction device 100 is greatly tilted, the suction member 104 and the cyst wall 117 can be secured. There is a risk that a cyst content liquid 118 may leak out due to a gap formed between them.
Therefore, in order to further improve the adhesion, the catheter 1
An adhesion auxiliary member is provided at the tip of 02a. In the case of FIG. 7A, this adhesion assisting member has a structure in which a bag-shaped swelling member 121 is provided inside the cyst wall 117.

The bulging member 121 has a structure in which it deflates before puncturing and bulges after puncturing, because if it bulges from the beginning it interferes with puncturing. For example, thin silicon resin, fluororesin, nylon resin, polyurethane resin, polyethylene resin, various elastomers, various blend materials, etc. are processed into a plurality of bag shapes or one donut shape, some of which are gas or liquid. Is attached to the taper portion 116 without being enclosed. The mounting method is the taper portion 116.
It may be attached to the taper portion 116.
Alternatively, a recess or a cutout may be provided in a part of the storage space for storage. The tip end surface of the taper portion 116 has a flat end surface shape so as not to damage the inner wall of the organ.

In the above-mentioned operation procedure (iv) in this case,
Since (v) and (vi) are the same as the configuration of FIG. 6, description thereof will be omitted. In order to inflate the swelling member 121 as shown in FIG. 7, gas or liquid (which does not adversely affect the contact part in the body) is externally shown in FIG. 7 (b) using a syringe prepared separately after puncturing. Lumen 126 (catheter 102a having a hole 102b through which the needle tube 108 passes)
It may be injected into the swelling member 121 through a flow path provided on the tube wall. The swelling member 121 is swollen. This state is shown in FIG. 7, in which the bulging member 121 has the cyst wall 1
17 is pushed up from the inside, and the cyst wall 117 is attached to the suction member 10.
Press against the edge of No. 4. As a result, the suction member 104 and the surface of the cyst wall 117 strongly adhere to each other and cannot be easily separated.

FIG. 8 shows a third embodiment of the medical suction device according to the present invention.
3 is a cross-sectional view showing the configuration (main part) of the embodiment of FIG. Note that, also in FIG. 8, the same reference numerals are used for the same components as in FIG. Therefore, redundant description will be omitted below. FIG. 8 also shows a configuration example for enhancing the adhesiveness. This configuration is characterized in that the rear portion of the taper portion 116 provided at the distal end portion of the catheter 102a in FIG. 6 is wound once like a pigtail and the pigtail portion 122 is provided to form an adhesion assisting member. The pigtail portion 122 extends from the inner cylinder unit 102 to the needle tube 10.
When the needle tube 108 is pulled out, the shape is as shown in FIG. 8, and when the needle tube 108 is inserted into the pigtail portion 122, the shape is linearly deformed. Therefore, when the needle tube 108 is completely pulled out from the inner cylinder unit 102, the shape shown in FIG. 8 is obtained.

To withstand such a shape change,
The catheter 102a is made of a material having a shape memory property, for example, a material in which the initially stored shape is not deteriorated or deformed at the human body temperature and sterilization temperature, or is unlikely to occur, specifically, a silicone resin, a fluororesin, or the like. It is processed using nylon resin, polyurethane resin, polyethylene resin, various elastomers, various blend materials, etc. The pigtail part 122 of the catheter 102a is circular, and the other part is processed into a straight pipe.

In the above-mentioned operation procedure (iv) in this case,
Since (v) and (vi) are the same as the configuration of FIG. 6, description thereof will be omitted. After all the operations are completed, when removing the catheter 102a having the pigtail portion 122, the needle tube 108 having a flat tip surface is inserted into the catheter 102a, and the pigtail portion 122 is linearly deformed and then removed. .

The pigtail 12 is attached to the tip of the needle tube 108.
Due to the provision of No. 2, the uppermost surface of the pigtail portion 122 pushes up the inside of the cyst wall 117 due to the elastic force of the pigtail portion 122 expanding, and the cyst wall 117
Are pressed against the edge of the suction member 104. Adsorption member 104
The surface of the cyst wall 117 strongly adheres to each other, and high adhesion can be obtained.

FIG. 9 shows a fourth medical suction device according to the present invention.
3 is a cross-sectional view showing the configuration (main part) of the embodiment of FIG. In FIG. 9 as well, the same reference numerals are used for the same elements as those in FIG. 6, and thus duplicated description will be omitted below. FIG. 9 also shows a configuration example for increasing the adhesion, and as a means for pushing up the cyst wall 117 from the inside, a scaling member 123 having a structure that expands and contracts like a foldable lantern.
Is used. The expansion / contraction member 123 is used for the catheter 10
When the needle tube 108 is inserted into 2a and the catheter 102a is in an attractive state, the needle tube 108 is linearly deformed.

Also in this case, (iv) of the above-mentioned operation procedure,
Since (v) and (vi) are the same as the configuration of FIG. 6,
Description is omitted. Before the expansion / contraction member 123 passes through the cyst wall 117, the surface thereof is close to the needle tube 108, and when the needle tube 108 is pulled out, the expansion / contraction member 123 changes to open to the state shown in FIG. 9. Therefore, the expansion / contraction member 123 is made of a material that does not cause deterioration or deformation of the shape initially stored at the human body temperature and sterilization temperature (or a material that does not easily generate), such as silicone resin, fluororesin, nylon resin, polyurethane resin. ,
Polyethylene resin, various elastomers, various blend materials, etc. are used. The expansion / contraction member 123 is manufactured by molding using such a material.

After all the operations are completed, the expansion / contraction member 123
When removing the catheter 102a having a needle, the needle tube 108 having a flat end surface is inserted into the catheter 102a, deformed linearly, and then removed. According to the configuration of FIG. 9, the upper surface of the expansion / contraction member 123 pushes up the inner surface of the cyst wall 117 by its own elastic force, and the suction member 104 and the cyst wall 11
Since the surface of No. 7 strongly adheres, high adhesion can be obtained.

In each of the above constructions, a side hole may be provided at the tip portion of the catheter 102a including the tapered portion 116. With this configuration, it is possible to suck a low-viscosity cyst content liquid or a high-viscosity content liquid such as a chocolate cyst. In addition, in FIG. 1 and FIG.
Although a three-way stopcock is provided, a two-way stopcock may be used instead.

Further, in order to prevent the deterioration of the image due to the reflected light from the light source of the endoscope, the outer cylinder 101a may be provided with antireflection processing. Further, in each of the above-described configurations, an example in which the cutting edge portion is obliquely cut or has a drawing structure is shown, but instead of this, a configuration having a step shape may be used. Alternatively, a triangular pyramid shape, a conical shape, a drill shape, or the like can be used.

[0046]

[Embodiment] Next, an embodiment based on the above configuration will be described. When the suction member 104 is used in endoscopic surgery, it is determined by the inner diameter of the trocar to be used.
-30 mmφ is suitable, but preferably 10-20 m
It is the value of mφ. The outer diameter of the outer cylinder 101a is 3 to 30.
Although mmφ is suitable, it is preferably 10 to 20 mmφ. The length of the outer cylinder 101a is determined depending on the targeted cyst, but is usually 100 to 400 mm.

Further, the needle tube 108 is SUS304, SUS
316 can be made with an outer diameter of 0.5 to 5
mmφ is suitable. As an example, it is a pipe shape of 18G (outer diameter 1.26 mm) made of SUS304.
Even with such a small diameter, it is used only for forming the puncture hole and not used for suction as in the conventional case, so there is no problem.

Incidentally, the conventional inner needle 202 for performing suction is 1
4G (outer diameter 2.11mm) or 17G (outer diameter 1.48m)
Due to the thinness of m), it was difficult to suck the content liquid such as a highly viscous chocolate cyst.

[0049]

As is apparent from the above, according to the present invention, since the suction member is attached to the suction side tip of the outer cylinder body in which the catheter is loosely fitted so that a predetermined gap is formed, the cyst is present. When sucking the content liquid, the suction member can be surely brought into close contact with the cyst wall, so that the leakage of the cyst content liquid from the suction member can be reliably prevented. In addition, repeated washing and suction operations and alcohol fixation are possible. Furthermore,
Since the cyst content liquid is aspirated (or washed) without using a needle tube, it is possible to efficiently aspirate even a content liquid such as a highly viscous chocolate cyst without damaging the inside of the organ.

Further, by forming or providing an adhesion assisting member at the distal end portion of the catheter, it becomes possible to firmly adhere the adsorbing member to the cyst wall when sucking the cyst content liquid.
It is possible to reliably prevent the leakage of the cyst content liquid from around the suction member. In addition, repeated washing and suction operations and alcohol fixation are possible.

[Brief description of the drawings]

FIG. 1 is a front view showing a medical suction device according to the present invention.

FIG. 2 is a front sectional view showing details of an outer cylinder unit according to the present invention.

FIG. 3 is a front sectional view showing details of an inner cylinder unit according to the present invention.

FIG. 4 is a cross-sectional view showing details of a connecting portion between an outer cylinder supporting portion and a tightening adapter according to the present invention.

FIG. 5 is a front sectional view showing a state in which the medical suction device according to the present invention is inserted into the abdominal cavity from the trocar and brought into close contact with the cyst wall surface of the organ.

FIG. 6 is a partial cross-sectional view showing a state in which the cutting edge of the medical suction device according to the present invention is inserted into a cyst wall to form a puncture hole.

FIG. 7 shows a second embodiment of the medical suction device of the present invention, (a) is a cross-sectional view showing the configuration of the main part, and (b) is a cross-sectional view of the catheter part.

FIG. 8 is a sectional view showing the configuration of a third embodiment of the medical suction device of the present invention.

FIG. 9 is a cross-sectional view showing the configuration of the fourth embodiment of the medical suction device of the present invention.

FIG. 10 is a front view showing a configuration of a conventional medical suction device having a double structure.

FIG. 11 is a front view showing a configuration of an outer cylinder of a conventional suction device.

FIG. 12 is a front view showing a configuration of a catheter of a conventional suction device.

[Explanation of symbols]

 100 medical suction device 101 outer cylinder unit 101a outer cylinder 102 inner cylinder unit 102a catheter 104 adsorption member 105 outer cylinder support 106 suction connection port 107 tightening adapter 108 needle tube 109 catheter base 110,113 connection port 111 three-way stopcock 114 needle base 115 Blade Edge 116 Tapered Part 117 Cyst Wall 118 Cyst Content Liquid 120 Gap 121 Swelling Member 122 Pigtail 123 123 Expansion / contraction Member 124 Lumen

Claims (6)

[Claims] 1. A cylindrical outer cylinder body, a suction-only connection port provided on a side wall of the outer cylinder body, and a cylindrical shape made of a flexible material. A suction member attached to the distal end, a catheter that is loosely fitted to the outer cylinder so as to create a predetermined gap in the radial direction and suctions the content liquid of the organ, and is detachably inserted into the catheter to be sharply attached. A needle tube for puncturing the organ with a processed tip, a base body for supporting the rear end of the catheter, and a fixing for moving and detachably holding the rear end of the catheter at an arbitrary position on the outer cylinder. A medical suction device comprising: a means; and at least one connection port for cleaning or suction provided at the rear end of the base body. 2. The medical suction device according to claim 1, wherein the fixing means is a screw coupling tightening adapter having a sealing member built therein. 3. A cylindrical outer cylinder body, a suction-only connection port provided on a side wall of the outer cylinder body, and a cylindrical shape made of a flexible material. With a suction member attached to the tip, a hollow catheter that is loosely fitted to the outer cylinder so that a predetermined gap is formed in the radial direction, and a sharply processed tip that is detachably inserted into the catheter. A needle tube for puncturing the organ, an adhesion assisting member that is formed or provided at the tip of the catheter and presses the wall body from the inside to the suction member after the tip of the catheter enters the organ, and the catheter A base having a hollow portion communicating with the hollow portion of the base body for supporting the rear end of the catheter, and a fixing means for removably and detachably holding the rear end of the catheter at the arbitrary position on the outer cylinder body, Installed at the rear end of the base It is a medical suction device which is characterized in that it comprises at least one cleaning or suction connection port communicating with the hollow portion of said substrate. 4. The medical suction device according to claim 3, wherein the adhesion aiding member is a balloon-shaped or hollow donut-shaped swelling member that is swelled before puncturing and can swell after puncturing. apparatus. 5. The adhesion aiding member is made of a material having a shape memory property and has a pigtail shape when unconstrained,
The medical suction device according to claim 3, wherein the structure is a structure that deforms linearly when restrained. 6. The adhesion assisting member is made of a material having a shape memory property, and is a expanding / contracting member that swells in a radial direction when not constrained and deforms into a contact state with the needle tube when constrained. The medical suction device according to claim 3.