JP2988865B2 - Medical suction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a medical device, in particular,
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 the gallbladder, a puncture needle has conventionally been used. The puncture needle is punctured into the organ, and the cyst content liquid is sucked through the puncture needle. I have. However, this puncture needle is difficult to puncture. In addition, puncture is usually performed while grasping the cyst with forceps, but in the case of an enlarged cyst, the cyst may rupture and the contents fluid may leak.

[0003] Therefore, as a configuration in which puncturing is easily performed and the leakage of the content liquid is prevented, a double-structured metal tube made up of a suction tube constituting an outer cylinder and a suction needle inserted into the inside of the suction tube. 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 the configuration shown in FIG. The outer cylinder 201 is made of metal and has a pipe shape as shown in FIG. 11, and both ends are open. A short cylindrical suction adapter 203 is externally fitted to one end of the outer cylinder 201. The suction adapter 203 is provided with a small-diameter cylindrical connection port 204 communicating with the inside of the outer cylinder 201.

[0004] As shown in FIG. 12, an inner needle 202 is elongated and mainly comprises a hollow pipe 205 (suction needle). Cutting edge 20 formed at the tip of pipe 205
Reference numeral 6 is cut diagonally so as to easily puncture the organ.
An inner needle base 207 is attached to a 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 operated) within a range of 90 degrees. When the cock 208 is turned to one side, the inside of the pipe 205 and the connection port 209 communicate with each other. Communication is cut off.

[0005] When the inner needle 202 is inserted into the outer cylinder 201, a gap is formed between the outer cylinder 201 and the inner needle 202, and the sucked cyst content liquid leaks out. Therefore, as shown in FIGS. 10 and 11, a packing 210 is provided at a connection 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 positioned and fixed so that the inner needle base 207 presses the packing 210, the cutting edge 206 is exposed from the distal end 201 a of the outer cylinder 201. In this state, a cylindrical gap is formed between the outer cylinder 201 and the inner needle 202. The rear end of this gap is sealed with a packing 210, but communicates with the connection port 204.

When using the suction device having the above-described configuration, a drain tube for surgery is connected to the connection port 204, and a tube for washing / suction is connected to the connection port 209. With the outer cylinder 201 held in hand, the blade edge 206 is inserted into the affected part (cyst), 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 content liquid of the cyst is sucked through the inner needle 202, and the content liquid of the cyst is discharged from the connection port 209. At the same time, the cyst content liquid leaked from the puncture hole is sucked into the cylindrical space in the outer cylinder 201 from the distal end portion 201a, 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 bring the entire periphery of the distal end into close contact with the organ, and the suction of the cyst content liquid is difficult. The contact state cannot follow the contraction of the organ due to the above, causing poor contact with the organ during aspiration, and the content liquid is easily scattered. In particular, if the cyst to be aspirated is likely to be malignant, it cannot be used because of the high risk of scattering of the contents.

[0008] In addition, there has been an inconvenience that washing of the cyst, repetition of suction and washing, and fixation with alcohol cannot be performed. Furthermore, in the case of chocolate cysts, it is desired to make the inner needle thicker because of its high viscosity. However, if the inner needle is made thicker, the puncture resistance becomes large and puncture becomes difficult. For this reason, the inner needle could not be thickened, and it was necessary to use a thin inner needle and take a long time to suck.

Further, since the contents of the cyst are sucked by the inner needle (suction needle), there is a possibility that the inside of the organ is damaged by the cutting edge of the inner needle during the suction. Therefore, the content liquid could not be completely sucked. Accordingly, an object of the present invention is to provide a medical suction device capable of improving the adhesion to an organ and efficiently sucking the contents 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 in which suction and washing are alternately repeated.

[0011]

In order to achieve the above object, the present invention provides a cylindrical outer cylinder, a connection port dedicated to suction provided on a side wall of the outer cylinder, and flexibility. A suction member is formed in a cylindrical shape using a material, and is attached to the tip of the outer cylinder on the suction side. A catheter for performing suction, a needle tube that is detachably inserted into the catheter and performs puncture of the organ with a sharply processed distal end, a base supporting the rear end of the catheter, and a rear end of the catheter A fixing means is provided for moving and detachably holding the outer cylinder at an arbitrary position, and at least one connection port for washing or suction provided at a rear end of the base.

According to this configuration, since the suction member attached to the distal end of the outer cylinder has flexibility, it can easily and surely adhere to the cyst wall of the organ. In addition, the suction portion of the suction device has a double structure of the outer cylinder and the catheter, and the gap formed therebetween forms an initial suction passage when the suction member is suctioned to the cyst wall. . Then, the needle tube after forming the puncture hole can be withdrawn from the catheter, whereby a suction tube is formed only by the catheter, and a connection port for washing or the like is left in the catheter, so that the inner wall of the cyst wall is removed. Aspirate the cyst fluid without damaging it,
Alternatively, cleaning can be performed.

As a result, according to the suction device having the above structure,
When the cyst content liquid is sucked, the suction member can be securely adhered to the cyst wall, so that leakage of the cyst content liquid from the suction member can be reliably prevented. In addition, it becomes possible to repeatedly perform washing and suction and fix alcohol. Furthermore, since the cyst content liquid is suctioned (or washed) without using a needle tube, it is possible to efficiently suction even the content liquid of a highly viscous chocolate cyst or the like.

[0014] The fixing means having the above-described structure can be a screw-adaptive tightening adapter having a sealing member incorporated therein. According to 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 the separation operation can be reliably performed in a short time.

[0015] The above object is to provide a cylindrical outer cylinder, a connection port dedicated to suction provided on a side wall of the outer cylinder, and a cylinder made of a flexible material. 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 created in the radial direction, and a detachably inserted and sharply machined into this catheter A needle tube for performing puncture of the organ at the distal end, and an adhesion assisting member formed or provided at the distal end of the catheter and pressing the wall from the inside toward the suction member after the distal end of the catheter has entered the organ. A base having a hollow portion communicating with the hollow portion of the catheter, supporting the rear end of the catheter, and fixing the rear end of the catheter to the outer cylinder at an arbitrary position so as to be movable and detachable. Means and after 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 configuration, since the suction member attached to the distal end of the outer cylinder has flexibility, it can easily and surely adhere to the cyst wall of the organ. In addition, the suction portion 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 the suction member is punctured when the suction member is suctioned to the cyst wall. The aspiration of the cyst content fluid leaking from the hole becomes possible. Further, the close contact assisting member provided at the distal end of the catheter acts to press the cyst wall from the inside toward the suction member. As a result, according to the suction device having the above configuration, when sucking the cyst content liquid, the suction member can be securely adhered to the cyst wall, so that 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 configuration, the close contact assisting member may be a balloon-like or hollow donut-like swelling member which is deflated before puncturing and swellable after puncturing.
According to this configuration, before puncturing, the cutting edge of the needle tube is deflated so as not to hinder insertion into the cyst wall, and can be swelled after puncturing, so that the cyst wall can be reliably pressed against the suction member,
Moreover, it does not damage organs. Therefore, the adhesion between the cyst wall and the suction member can be greatly improved.

Alternatively, the close-fitting assisting member may be made of a shape-memory material, and may be an expanding / contracting member that takes on a pigtail shape when not restrained and linearly deforms when restrained. 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 inserted needle tube is pulled out, Eventually it becomes a pigtail. Since this arc portion has elasticity, it forms a kind of coil spring, and its upper end pushes up the inner surface of the cyst wall, and the cyst wall is brought into close contact with the suction member. Therefore, the adhesion between the cyst wall and the suction member can be greatly improved.

Further, the close contact assisting member may be made of a material having a shape memory, and may have a structure that swells in a radial direction when not restrained and deforms into a tight contact state with the needle tube when restrained. According to this configuration, after the cutting edge of the needle tube has penetrated the cyst wall, the adhesion assisting member that has entered the organ together with the needle tube has its distal end retracted as the inserted needle tube is pulled out, and is brought into close contact with the needle tube. The structure that has become swells gradually in the diameter direction of the needle tube, and finally comes to a state where a three-dimensional object is attached to the needle tube. Since this three-dimensional object has moderate elasticity, it becomes a kind of air spring or link joint,
The upper end pushes up the inner surface of the cyst wall, causing the cyst wall to adhere to the suction member. Therefore, the adhesion between the cyst wall and the suction member can be greatly 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 a configuration shown in FIG. 2 and an inner cylinder unit 102 having a configuration shown in FIG. As shown in FIG. 2, the outer cylinder unit 101 mainly includes a cylindrical outer cylinder 101a. The outer cylinder 101a is formed into a pipe shape using stainless steel or the like, and both ends are open.
A connector 103 having substantially the same outer diameter as the outer cylinder 101a is attached to a distal end of the outer cylinder 101a.

Further, at the tip of the connector 103, a part of a suction member 104 made of a material having characteristics of good flexibility and good adhesion to an organ is externally fitted. The tip is unconstrained to flex freely according to contact pressure. By mounting the suction member 104 via the connector 103, the suction member 104 that can be replaced more quickly than other components can be easily replaced.

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

The other end of the outer cylinder 101a has an outer cylinder 10
A distal end of an outer cylinder supporting portion 105 (for example, made of brass and having a nickel plating on the surface) slightly shorter than 1a is connected to the outer cylinder supporting portion 105 (in combination with the outer cylinder 101a). Forming a cylindrical body). This outer cylinder support 105
Has a function of controlling the tip position of the cutting edge from outside the abdominal cavity. Further, a suction connection port 106 (a suction-dedicated connection port) is provided upright on the side wall surface near the front end of the outer cylinder support portion 105, and the inserted catheter 102a can be supported at an arbitrary position at the rear end. , A fastening adapter 107 (forming a fixing means together with a built-in sealing member) is mounted.

As shown in FIG. 3, the inner cylinder unit 102
Is a needle tube 108 formed by processing a metal such as stainless steel into a thin tube,
The catheter 102a fitted to the outside of the needle tube 108, the catheter base 109 as a base having a tapered structure and attached to the rear end of the catheter 102a, and the catheter base 1
09, a connection port 110 attached to the rear end,
0, a three-way stopcock 111, and a three-way stopcock 1
Handle 11 for selecting each connection port communicating with 11
2. A connection port 113 provided at a right angle to a portion of the connection port 110 where the three-way cock 111 is provided, and a needle base 114 attached to the rear end of the connection port 110 and supporting the rear end of the needle tube 108. It 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 8 is used only for forming a puncture hole and does not perform suction, it can be manufactured using, for example, a solid rod made of stainless steel.

Further, the distal end of the needle tube 108 is formed at an acute angle so as to easily puncture an organ, thereby forming a cutting edge 115. The distal end of the catheter 102a is formed with a tapered portion 116 whose outer diameter gradually decreases toward the distal end to reduce puncture resistance. Also,
When the inner tube unit 102 is inserted into the outer tube 101a and the outer tube support 105 at the base of the catheter base 109,
A scale 125 is provided to grasp the insertion amount.

The handle 112 of the three-way cock 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), 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 (a position where the handle 112 faces the catheter base 109) not communicating 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 cross-sectional view showing the details of the connection between the outer cylinder support 105 and the tightening adapter 107. The outer cylinder support 105 and the fastening adapter 107 are screwed together so as to be detachable. For this reason, the threaded portion 124 is applied to the meshing portion. In order that the tightening adapter 107 can be mounted with a certain width, the tightening adapter 1
07 is provided with a concave groove 107a, into which the rear end portion 105a of the outer cylinder support portion 105 fits. In order to prevent the cyst content liquid from leaking from the joint, a cylindrical packing 107 is provided inside the rear end portion 105a.
The inside 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 configuration, the catheter 102a and the catheter base 10 are used.
9, and the first unit including the three-way cock 111,
The 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 is attached to the outer cylinder unit 101 including the outer cylinder 101a, the outer cylinder support 105, and the tightening adapter 107.
Insert 2.

At this time, after the inner cylinder unit 102 is positioned so that the cutting edge 115 does not protrude from the suction member 104, the inner cylinder unit 102 is fixed by the fastening 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 (near the cutting edge 115). The other end of this space is sealed by a tightening adapter 107, but communicates with the suction connection port 106. In this state, a surgical drain tube (not shown) (a suction means such as a suction pump is connected to an end) is connected to the suction connection port 106. In this state, the cyst wall of the organ is punctured to aspirate and wash the cyst content, and the procedure will be described below.

(I) First, the assembled medical suction device 100 is inserted into the abdominal cavity from a trocar and brought into close contact with the surface of the cyst wall 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 comes into close contact with the cyst wall 117. Even if the cyst wall 117 has irregularities, the suction member 10
Since the distal end surface of the fourth member 4 is freely deformed, the suction member 104 can be securely brought into close contact. The space 119 formed in the suction member 104 communicates with a gap 120 formed between the outer cylinder unit 101 and the inner cylinder unit 102.

(Ii) Then, after the puncturing position is determined and the handle 112 is set to the off position, suction is started from inside the suction member 104 through the suction connection port 106. By this suction, a negative pressure is formed in the space 119 and the gap 120, and the distal end surface (circumferential surface) of the suction member 104 and the cyst wall 1
Reference numeral 17 indicates a state of further close contact. (Iii) While performing this suction, the tightening adapter 107
To move the inner cylinder unit 102 forward from the outer cylinder unit 101.
(Protruding within a range of 100 mm) and inserted into the cyst wall to form a puncture hole. FIG. 6 shows this state.

(Iv) After this puncture, the needle tube 108 is withdrawn from the inner cylinder unit 102 (with the needle base 114 withdrawn) so that the inner wall of the organ is not damaged during the subsequent operation, and the catheter is inserted into the cyst wall. Only 102a remains. 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 (both not shown) is connected to the connection port 110 (a 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 taper portion 116 or the catheter 1
Even if the cyst content liquid 118 leaks from around the area 02a (that is, the inner peripheral surface of the puncture hole), the space 119 and the gap 12
It is sucked by the 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 adhesion to the surface of the cyst wall 117 is performed through the suction member 104, the cyst content liquid 118 that has come out of the cyst wall 117 is surely removed from the gap. It is sucked into 120 and does not leak out of the suction section. (Vi) To perform the 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 communicated. Then, the cleaning liquid (physiological saline, alcohol, etc.) is sent from the connection port 113 to the medical suction device 100, and then the operation of switching the handle 112 to perform suction or the operation of switching the handle 112 to perform cleaning and suction alternately. Is repeatedly executed.

FIG. 7A is a sectional view showing the configuration (main parts) of a second embodiment of the medical suction apparatus according to the present invention. In FIG. 7A, the same reference numerals are used for the same components as those in FIG. 6, and therefore, the duplicate description will be omitted below. In the configuration of FIG. 6, the adhesion is ensured 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 inclined, the suction member 104 and the cyst wall 117 are prevented. There is a risk that a cyst content liquid 118 leaks out.
In order to further improve the adhesion, the catheter 1
A contact auxiliary member is provided at the tip of 02a. In the case of FIG. 7 (a), this adhesion assisting member has a configuration in which a bag-shaped bulging member 121 is provided inside the cyst wall 117.

When the bulging member 121 bulges from the beginning, it obstructs puncturing, so that it is deflated before puncturing and bulges after puncturing. For example, thin silicon resin, fluorine resin, nylon resin, polyurethane resin, polyethylene resin, various elastomers, various blend materials, etc. are used to process multiple bags or one donut, but some of them are gas or liquid. Is attached to the tapered portion 116 without being sealed. The mounting method is the taper portion 116
May be stuck on the tapered portion 116.
May be provided with a concave portion or a notch portion and stored. The end surface of the tapered portion 116 is flat so as not to damage the inner wall of the organ or the like.

In this case, (iv) of the operation procedure described above,
(V) and (vi) are the same as the configuration in FIG. In order to inflate the swelling member 121 as shown in FIG. 7, a gas or liquid (having no adverse effect on the contact portion in the body) is externally shown in FIG. 7B using a syringe separately prepared after puncturing. Catheter 102a having a hole 102b through which a lumen 126 passes (needle tube 108)
May be injected into the swelling member 121 through a flow path provided on the tube wall. The bulging member 121 is bulged. FIG. 7 shows this state, and the swelling member 121 is attached to the cyst wall 1.
17 is pushed up from the inside, and the cyst wall 117 is
4 is pressed against the edge. As a result, the surface of the suction member 104 and the surface of the cyst wall 117 are strongly adhered to each other and are not easily separated.

FIG. 8 shows a third embodiment of the medical suction device according to the present invention.
It is sectional drawing which shows the structure (main part) of 1st Embodiment. In FIG. 8, the same reference numerals are used for the same components as those in FIG. Therefore, duplicate description will be omitted below. FIG. 8 also shows a configuration example for improving the adhesion. This configuration is characterized in that the rear part of the tapered portion 116 provided at the distal end portion of the catheter 102a in FIG. 6 is wound once like a pigtail to form a pigtail portion 122 to form an adhesion assisting member. The pig tail portion 122 is moved from the inner cylinder unit 102 to the needle tube 10.
When the needle tube 108 is pulled out, the shape shown in FIG. 8 is obtained. 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 becomes as shown in FIG.

In order to withstand such a shape change,
The catheter 102a is made of a material having shape memory properties, for example, a material that does not or hardly deteriorate or deform the shape initially stored at human body temperature and sterilization temperature, specifically, silicone resin, fluororesin, It is processed using nylon resin, polyurethane resin, polyethylene resin, various elastomers, various blend materials, and the like. In the catheter 102a, the pig tail portion 122 is processed into a circular shape, and the other portions are processed into a straight pipe.

In this case, (iv) of the operation procedure described above,
(V) and (vi) are the same as the configuration in FIG. When the catheter 102a having the pigtail portion 122 is pulled out after all operations are completed, the needle tube 108 having a flattened end surface is inserted into the catheter 102a, and the pigtail portion 122 is straightly deformed and then pulled out. .

The pigtail 12 is attached to the tip of the needle tube 108.
The upper surface of the pigtail portion 122 pushes up the inside of the cyst wall 117 by the elastic force of the pigtail portion 122 to be expanded by the provision of the
Is pressed against the edge of the suction member 104. Suction member 104
And the surface of the cyst wall 117 are strongly adhered to each other, and high adhesion can be obtained.

FIG. 9 shows a fourth embodiment of the medical suction device according to the present invention.
It is sectional drawing which shows the structure (main part) of 1st Embodiment. In FIG. 9, the same reference numerals are used for the same elements as those in FIG. FIG. 9 also shows an example of a configuration for increasing the adhesion, and as a means for pushing up the cyst wall 117 from the inside, an expanding / contracting member 123 having a structure of expanding / contracting like a folding lantern.
Is used. The expansion / contraction member 123 is
When the needle tube 108 is inserted into 2a and the catheter 102a is in a state where an attractive force is applied, the catheter 102a is linearly deformed.

Also in this case, (iv) of the operation procedure described above,
(V) and (vi) are the same as the configuration of FIG.
Description is omitted. Before the expansion member 123 passes through the cyst wall 117, its surface is close to the needle tube 108, and when the needle tube 108 is pulled out, the expansion member 123 changes to the state shown in FIG. For this reason, the expanding / contracting member 123 is made of a material that does not cause deterioration or deformation in the shape initially memorized at the human body temperature and the sterilization temperature (or a material that hardly occurs), for example, a silicone resin, a fluorine resin, a nylon resin, and a polyurethane resin. ,
Polyethylene resin, various elastomers, various blend materials and the like are used. Using such a material, the expansion member 123 is manufactured by molding.

After all the operations are completed, the expansion / contraction member 123
When pulling out the catheter 102a having a needle, the needle tube 108 having a flattened distal end surface is inserted into the catheter 102a, deformed linearly, and pulled out. According to the configuration of FIG. 9, the upper surface of the expansion 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
7 strongly adheres to the surface, so that high adhesion can be obtained.

In each of the above structures, a side hole may be provided at the distal end of the catheter 102a including the tapered portion 116. With this configuration, it is possible to aspirate a low viscosity cyst content liquid or a high viscosity chocolate cyst or other content liquid. Also, in FIGS. 1 and 3,
Although a three-way cock is provided, a two-way cock may be used instead.

Further, in order to prevent the deterioration of the image due to the reflected light of the light source of the endoscope, the outer cylinder 101a may be provided with anti-reflection processing. Further, in each of the above-described configurations, an example has been described in which the cutting edge is cut obliquely or a drawn structure is used, but a configuration in which a step shape is provided may be used instead. Alternatively, the shape may be a triangular pyramid, a cone, a drill, or the like.

[0046]

Next, an embodiment based on the above configuration will be described. When the suction member 104 is used for endoscopic surgery, it is determined by the inner diameter of the trocar used.
３０30 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 depends on the target cyst, but is usually 100 to 400 mm.

Further, the needle tube 108 is made of SUS304, SUS
316, whose outer diameter is 0.5-5
mmφ is appropriate. An example is a pipe shape of 18G (outer diameter 1.26 mm) made of SUS304.
Even with such a small diameter, there is no problem because it is used only for forming a puncture hole and is not used for suction unlike the prior art.

Incidentally, the conventional inner needle 202 for performing suction is composed of 1
4G (outer diameter 2.11mm) or 17G (outer diameter 1.48m)
Due to the thinness of m), it was difficult to aspirate the contents such as chocolate cysts having high viscosity.

[0049]

As is clear from the above, according to the present invention, since the suction member is attached to the suction-side end of the outer cylinder body into which the catheter is loosely fitted so that a predetermined gap is formed, the cyst is formed. When the content liquid is sucked, the suction member can be securely adhered to the cyst wall, so that leakage of the cyst content liquid from the suction member can be reliably prevented. In addition, it becomes possible to repeatedly perform washing and suction and fix alcohol. Furthermore,
Since the cyst content liquid is aspirated (or washed) without using a needle tube, it is possible to efficiently aspirate the content liquid of a highly viscous chocolate cyst or the like without damaging the inside of the organ.

In addition, by forming or providing the adhesion assisting member at the distal end of the catheter, the suction member can be surely adhered to the cyst wall when sucking the cyst content liquid,
Leakage of the cyst content liquid from around the suction member can be reliably prevented. In addition, it becomes possible to repeatedly perform washing and suction and fix alcohol.

[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 coupling portion between the outer cylinder support portion and the tightening adapter in 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 a peritoneal cavity from a trocar and is brought into close contact with the surface of a cyst wall of an organ.

FIG. 6 is a partial cross-sectional view showing a state where a blade of a medical suction device according to the present invention is inserted into a cyst wall and a puncture hole is formed.

FIGS. 7A and 7B show a second embodiment of the medical suction apparatus of the present invention, wherein FIG. 7A is a cross-sectional view showing a configuration of a main part, and FIG.

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

FIG. 9 is a sectional view showing the configuration of a fourth embodiment of the medical suction apparatus 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]

 DESCRIPTION OF SYMBOLS 100 Medical suction apparatus 101 Outer cylinder unit 101a Outer cylinder 102 Inner cylinder unit 102a Catheter 104 Suction member 105 Outer cylinder support part 106 Suction connection port 107 Fastening adapter 108 Needle tube 109 Catheter base 110, 113 Connection port 111 Three-way cock 114 Needle base 115 Blade edge 116 Taper portion 117 Cyst wall 118 Cyst content liquid 120 Gap 121 Swelling member 122 Pigtail portion 123 Expanding / contracting member 124 Lumen

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A61M 1/00 A61B 17/34 A61M 27/00

Claims (6)

(57) [Claims] 1. A cylindrical outer cylinder, a connection port for exclusive use of suction provided on a side wall of the outer cylinder, and a cylinder made of a flexible material, which is formed on a suction side of the outer cylinder. A suction member attached to the distal end, a catheter that is loosely fitted to the outer cylinder so as to form a predetermined gap in the radial direction and suctions the contents of the organ, and is detachably inserted into the catheter, and sharply inserted. A needle tube for puncturing the organ with the processed distal end portion, a base for supporting the rear end of the catheter, and a fixation for moving the rear end portion of the catheter to the outer cylinder at an arbitrary position and detachably holding the rear end portion A medical suction device comprising: a means; and at least one connection port for cleaning or suction provided at a rear end of the base. 2. The medical suction device according to claim 1, wherein the fixing means is a screw-adapted fastening adapter having a sealing member. 3. A cylindrical outer cylinder, a connection port for exclusive use of suction provided on a side wall of the outer cylinder, and a cylindrical material made of a flexible material. A suction member attached to the distal end, a hollow catheter loosely fitted to the outer cylinder so as to generate a predetermined gap in the radial direction, and a sharply processed distal end portion removably inserted into the catheter. A needle tube for puncturing the organ, an adhesion assisting member formed or provided at the distal end of the catheter, and pressing the wall from the inside toward the suction member after the distal end of the catheter enters the organ; the catheter A base having a hollow portion communicating with the hollow portion and supporting a rear end of the catheter, and a fixing means for holding the rear end of the catheter at an arbitrary position on the outer cylinder body and detachably holding the rear end portion, 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 assisting member is a balloon-shaped or hollow donut-shaped swelling member that can be swelled before puncturing and swelled after puncturing. apparatus. 5. The adhesion assisting member is made of a shape memory material, and has a pigtail shape when not restrained.
The medical suction device according to claim 3, wherein the medical suction device is a structure that deforms linearly when restrained. 6. The close-contact auxiliary member is made of a shape-memory material, and is an expanding / contracting member that swells in a radial direction when not restrained and deforms into a tight contact state with the needle tube when restrained. The medical suction device according to claim 3.