JP2002514460A - Apparatus and method for exhausting refuse from body tissue - Google Patents

Abstract

(57) SUMMARY The present invention relates to an apparatus 10 and method for draining lesions from body cavities and organs. The device 10 includes a sheath 14 having a suction passage defined therein, a means for providing suction connected to the suction passage, a rotor 12 disposed inside the sheath 14, and a continuous And an inhalation outlet 22 connectable to means for providing inhalation and at least one scalpel 13 connected to the rotor 12 for resecting the lesion, the lesion being connected to the inhalation outlet 22. Removed through.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to a suction device. The invention particularly relates to a method of manufacturing such a device for use in surgery.

BACKGROUND OF THE INVENTION [0002] Inhalation devices are often used to withdraw body fluids and other substances from a human body cavity. These devices are effective for non-viscous fluids such as uncoagulated blood. However, its effectiveness is diminished when it contains more viscous fluids, such as cyst contents, thick secretions, clots, sticky forms of pus, and other hard lesions. The inhalation action is insufficient to evacuate such solid and semi-solid refuse, rather, direct mechanical intervention is required.

[0003] US Patent Nos. 5,275,609 and 5,290,303 describe devices for removing a target object from a body tube. These devices use a rotating woven coil as a mechanical grinding agent, and the discharge of the target object debris is by suction.

[0004] Thesis "Development of a new surgical device-endoscopic liquefier and surgical aspirator (ELSA)-"("The development of a new surgical")
al device-the Endoscopic Liquidizer
and Surgical Aspirator (ELSA) ") (Journ
al of Medical Engineering and Techno
(November / December 1989) describes an endoscope liquefier and a surgical suction device (ELSA). According to ELSA, solid diseased tissue can be liquefied using a rotary scalpel in the form of a drill or propeller as a mechanical crushing agent, and the tissue debris ejected by suction (inhalation) force .

SUMMARY OF THE INVENTION [0005] One object of the present invention is to improve refuse from solid body and semi-solid material having different viscosities and flow rates from body organs. It is to provide a device that has been implemented.

In accordance with a preferred embodiment of the present invention, there is provided an apparatus for draining a lesion from a body cavity and organ. The device includes a sheath having a suction passage defined therein, a means for providing suction connected to the suction passage, a rotor disposed inside the sheath, and a suction passage connected to the suction passage. An inlet and outlet, which can be connected to means for providing, and at least one scalpel connected to the rotor for cutting off the lesion, are included, and the lesion is removed through the inlet and outlet.

[0007] Still further, in accordance with a preferred embodiment of the present invention, the apparatus further includes a ribbed resection cage disposed about at least one resection knife.

[0008] Furthermore, according to a preferred embodiment of the present invention, the scalpel is arranged outside the sheath. At least a portion of the sheath is flexible and / or disposable.

In addition, according to a preferred embodiment of the present invention, the scalpel can be formed in a loop. The scalpel is provided with two concave blades arranged radially in the direction of the inlet and outlet.

[0010] Furthermore, according to a preferred embodiment of the present invention, the device further comprises means for incising the lesion.

Furthermore, according to a preferred embodiment of the present invention, the cutting means further comprises a correspondingly configured articulating jaw.

In addition, according to a preferred embodiment of the present invention, there is also provided a method for clearing a lesion from a body cavity and organ. The method includes inducing at least a portion of the lesion to receive a suction force and concomitantly applying an ablation action to the lesion by at least one scalpel.

Still further, in accordance with a preferred embodiment of the present invention, the method further includes the step of forcing the excised lesion away from body cavities and organs with at least one scalpel.

Still further, according to a preferred embodiment of the present invention, the step of applying a cutting operation is performed manually.

Still further, according to a preferred embodiment of the present invention, the method further comprises the step of crushing the excised lesion.

Furthermore, in accordance with a preferred embodiment of the present invention, the method also includes a second step of adding inhalation following the step of milling.

The present invention will be more fully understood and appreciated from the following detailed description taken in conjunction with the accompanying drawings.

DETAILED DESCRIPTION OF THE INVENTION Reference is now made to FIG. 1A, which illustrates an inhalation device 10 (ie, a suction device) constructed and operated in accordance with a preferred embodiment of the present invention. ing.
The inhaler 10 includes a cylindrical sheath 14 connected to an inlet / outlet 22. The rotor 12 is inserted inside the cylindrical sheath 14. The rotor 12 is connected to a rotatable half-loop knife 13 whose blades are completely surrounded by a knife head 40 configured in a cage-like configuration (best seen in FIGS. 2A-2C). Have been. The sheath 14 allows the inlet / outlet 2
2 and the opening 11 of the aspirator 10 are connected, which means that
This means that the second task of directing the suction channel into the resection site is achieved. A motor 24, usually an electric or pneumatic motor, is operatively connected to the rotor 12 and located at one end of the device, opposite the scalpel 13. The rotor 12 includes a radial spacer 20 disposed inside the sheath 14 near the outer opening 11, and a second spacer 18 disposed near the inlet / outlet 22 (distally from the outer opening 11). And by the center.

The details of these spacers 18, 20 are shown in FIG. 1B, to which reference is now made. FIG. 1B is a cross-sectional view of the spacer 18 inside the sheath 14. The spacers 18, 20 keep the rotor 12 equidistant from the periphery of the sheath 14 and also provide a free passage (void 15) for the substance to be inhaled.

Another feature in this embodiment of the invention, showing the configuration of the blades of the inhaler (aspirator) 10, is FIG. 1C, which shows the configuration of the blades of the aspirator 10 referred to herein.
1 to 1F. The scalpel 13 has a half-loop shape and includes two blades 19 and 21. Each of the blades 19 and 21 has a sharp cutting edge in the direction of advance of the movement. Thus, the cutting direction for each blade is towards the opposite edge of each blade 19 and 21. The cutting edge 23 of the blade 21 is arranged in the direction of rotation. Arrow 27 indicates the direction of rotation about rotor 12.

In operation, the medical team uses the device of the present invention to break down the mass of refuse,
Displace and eject. As the medical team works, the device of the present invention uses both mechanical and suction power to expel the refuse. The refuse is sometimes located very close to healthy tissue or tissue that should remain untouched. It is therefore very important to use a stable scalpel head 40 (ie, cage) to protect healthy tissue and tissue that should remain undamaged from physical injury.

A stable scalpel head 40 is shown in FIGS. 2A, 2B, and 2C, which are an isometric view, a cross-sectional view, and a front view, respectively, of the scalpel head 40 referred to herein. 2A-2C, the scalpel head 40 comprises a cage made of ribs 41 and having a base ring 45 screwed to the sheath 14, thereby covering the opening 11 of the aspirator (not shown). Is shown in This allows the half-loop scalpel 1 to be used without exposing the body tissue to harm from the scalpel operation
3 can be brought to the vicinity of the substance. This cage protects the tissue, on the one hand, from potential damage to the scalpel and, on the other hand, tears the refuse by exerting the cutting action of the manually pushed cage ribs on the tissue or refuse. There are two functions. This ablative action serves to evacuate the fuse, especially the semi-solid fuse.

According to another preferred embodiment of the invention, a different arrangement of the scalpel is provided. In FIG. 3 to which reference is made here, a straight knife 30 is protected by a cylindrical sheath 14 and a knife head 40. Elements of embodiments of the present invention that are similar to the elements previously described for the preferred embodiments described earlier in this specification will be assigned similar reference numerals and will not be described further.

The rotor 12 for rotating the scalpel 30 is centered by the proximal spacer 20 and the distal spacer 18 and is driven by a motor 24. Inlet and outlet 2
2 facilitates connection to a vacuum generator (not shown).

The structure of the scalpel 30 is illustrated in detail in FIG. 4 to which reference is made herein. The scalpel 30
The shaft 56 comprises at least two blades 32 and 33 arranged radially.
Has a rotor 12 connected at a site 55 overlapping the center of radial symmetry of the scalpel represented by The direction of rotation of the rotor is indicated by three arrows.
It can be seen that the scalpel is indicated by the opposite cutting edges 31 and 29 of the different blades. The flank of each blade facing the direction of rotation of the rotor 12 is curved with sharp cutting edges 31 and 33 facing the direction of radial movement, respectively, as indicated by the straight arrows 51 and 52. ing. Arrow 53
The direction of the radial movement around the rotor 12 is indicated.

The parallel functionality of the knife 30 is enhanced by the shape of the blade in this embodiment. The ablation and nicking action on one hand and pushing the knurled suspension material back on the other, as represented by arrow 57, are two parallel functions in the scalpel. This pushing action is provided by the shape of the flank of the advancing blade. When the mass of the fuse is cut by the blade, the fuse is always subjected to the pressing action of the flank of the blade. One component of such a force is in a circular direction,
The other component exerted at the same time results from the component pushing behind the advancing blade. This backward pushing force is in addition to the suction force provided through its inlet and outlet,
Is what is affected.

Another embodiment of an aspirator is shown in FIGS. 5A and 5B, to which reference is now made. Elements of this embodiment of the invention that are similar to those described above for the preferred embodiment described earlier in this specification will be assigned similar reference numerals and will not be described further.

The cross-section elevation of the aspirator shown in FIG. 5A is provided with a proximal spacer 20 and a distal spacer 18 for centering the rotor 13. This rotor is driven by a motor 24 and its torque is
First scalpel 30 (closer to cage 40) and second scalpel 35 (farther to cage 40)
It is told to.

Both scalpels are similar to the scalpel of FIG. Therefore, 2
One job is performed. One is resection and the other is the displacement of material from cage 40. At the head of the aspirator, the scalpel 30 is again protected by a cage 40 having a base ring 45 screwed to the sheath 14, thereby covering the opening of the aspirator (not shown). In FIG. 5B, the cage 40 is shown as having ribs 41. According to such a specific embodiment, the substance is brought into proximity with the forward scalpel 30 by the action of the scalpel as previously discussed with respect to other embodiments, without risk of damaging body tissue that should not be touched. It is possible to reach. As discussed above, this cage, on the one hand, protects the tissue from potential damage to the scalpel and, on the other hand, possibly tears off the refuse with the cutting action of the manually pushed cage ribs. There are two functions. As in other embodiments, the vacuum outlet 22 causes suction into the sheath 14. In addition, according to this embodiment, applying the mechanical suction provided by the distal scalpel 35 provides an extra withdrawal force for the engraved material. FIG. 5C shows another female configuration for this embodiment. Here, the scalpel 30 is a half-loop scalpel (similar to the scalpel 13 in FIG. 1A), and the scalpel 35 is a straight scalpel (similar to the scalpel 30 in FIG. 3).
In practice, any combination of scalpels can be used, and any number of scalpels can be used, and the preceding combinations are given by way of example only.
The previous embodiment is characterized by the cutting action of the scalpel head (C), the grinding action of the rotary blade (G) and the suction action of the device (S). In this way, we can characterize these embodiments by abbreviations (CGS).

Referring now to FIG. 6, there is shown another embodiment of the inhaler wherein the scalpel 30 is distal to the opening 11 of the aspirator. Motor 24, rotor 13, sheath 14
And the two spacers 18 and 20 are similar to those in the previous embodiment.

Referring now to FIG. 7A, another embodiment is shown where a single scalpel 13 is distal from the opening. In this embodiment, the scalpel 13 is formed in a loop shape, and its rotation axis is perpendicular to the axis of the sheath 14 and is vertical. The scalpel is arranged substantially at the vacuum outlet 22, and the drive motor 24 is arranged on the same axis as the rotating shaft of the scalpel and the rotor 12. This motor is housed in a handle 11 that is gripped by the hand of a physician operating the aspirator. FIG. 7B, which is also referred to here, shows the scalpel 13 formed in a loop shape and the shaft 19 attached to the drive motor 24. The two embodiments are characterized by ablation, inhalation, crushing, inhalation (CSG.
S).

FIGS. 8A, 8B, 8C, and 8D referred to herein illustrate yet another embodiment of the present invention. In this embodiment, members similar to those in the previous figures are given similar reference numerals and will not be described further. In addition to the features of the previous embodiment, which includes a scalpel 13 formed substantially in the vacuum outlet 22 and formed in a loop, this embodiment is characterized by a pair of jaws 50 disposed in front of the opening 11. Attached. The jaws 50 open and close in a pliers-like motion, capturing and cutting tissue pieces like pliers. The jaws 50 are hollow and, when closed, assume a hollow conical shape with a curved front end. The closed state is
This is best illustrated in FIG. 8C.

The mechanism for opening and closing the jaws 50 is best illustrated in FIGS. 8B and 8C, and includes a handle 53 connected to a shaft 55. Shaft 55
Is fixed to the main body of the inhaler 10 via the pivot 57. The pivot 57 allows the end of the shaft 55 to be connected to the plate 61 via the second pivot 59. The plate 61 includes an outer cylinder 63 surrounding the sheath 14.
Attached to. The sheath 14 moves in the direction of the outer opening 11 of the aspirator against the action of the spring 65 when the handle 53 is pulled in the direction of the arrow 69. Tabs 71 and 73 are attached to the top and bottom of outer cylinder 63 via pivots 75 and 77, respectively. The tabs 71 and 73 are
Tabs 79 attached to jaws 50 at an angle via 3 and 85, respectively
Press and 81. Tabs 79 and 81 are secured to sheath 14 at pivots 89 and 87, respectively. Accordingly, the jaw 51 closes when the handle 53 is tightened in the direction of arrow 69 and opens when the handle 53 is released, facilitating the cutting action.

The cutting action of the jaws 51 facilitates the process of removing and draining certain tissues that would be difficult to remove in the absence of the jaws 51. These troublesome tissues include fibrin-skinned skin, pus, tumor tissue, and the walls of hydatid cysts. Thus, the present invention facilitates a minimally invasive surgery for the removal of these types of tissue, in which the tissue is excised and simultaneously drained. This embodiment illustrates the actions that occur. G. FIG. S, ie cut, crush and inhale.

Some examples of the use of features in each embodiment of the present invention for various treatments and treatments for different types of tissue are given in the following table.
This will be explained later in this specification.

[0036]

[Table 1] It will be appreciated that, in the present invention, the cutting knife that first contacts the fuse to be drained can be located at various locations relative to the rotor sheath. The sheath also functions as a conduit for suction power. In the first embodiment, the scalpel is a curved scalpel arranged at the open end of the sheath, in the second embodiment, the scalpel is a straight scalpel, and in the third embodiment, two consecutive scalpels are Located inside, in the fourth and fifth embodiments, the scalpel is located deep inside the sheath.

According to the fourth and fifth embodiments, flexible tubing so that a physician can manipulate the sheath to reach an unexposed or inaccessible niche within the body cavity Makes it possible to make a sheath from To protect the sheath from collapsing when using flexible tubing, the sheath can be prefabricated using metal coils of appropriate parameters as reinforcement for the flexible tubing and manipulator.

In a sixth embodiment, a scalpel that is placed deep inside the sheath and a cutting instrument at the opening to cut the tissue before ejecting it can be used. Any combination of the above configurations can be made, and
It should be noted that a combination of the respective advantages in them can be obtained. In this way, the number and type of scalpels and their positions can be changed.

According to the fourth and fifth embodiments with the scalpel deeply disposed inside the sheath, the disposable sheath tubing can be easily used. In such an application, the need to clean and sterilize the sheath would be another advantage.

It will be appreciated by those skilled in the art that the present invention is not limited to what has been particularly shown and described herein. Further, the scope of the present invention is defined by the appended claims.

[Brief description of the drawings]

FIG. 1A is a cross-sectional elevation view of an inhaler (aspirator) constructed and operated in accordance with a preferred embodiment of the present invention.

FIG. 1B is a view of a spacer used in the inhaler of FIG. 1A.

FIG. 1C is a detailed elevational view of the configuration of the blade in the suction device of FIG. 1A.

FIG. 1D is a detailed elevational view of the configuration of the blade in the suction device of FIG. 1A.

FIG. 1E is a detailed elevational view of the configuration of the blade in the suction device of FIG. 1A.

FIG. 1F

FIG. 2A is an isometric elevation view of a cage-shaped stable scalpel for covering the end of the aspirator device of FIG. 1A.

FIG. 2B is a side elevational view of a cage-like stable scalpel for covering the end of the suction device of FIG. 1A.

FIG. 2C is a front elevation view of a cage-like stable scalpel for covering the end of the aspirator device of FIG. 1A.

FIG. 3 is an illustration of an aspirator device constructed and operated in accordance with another preferred embodiment of the present invention.

FIG. 4 is a detailed view of the scalpel of FIG. 3;

FIG. 5A is an illustration of an aspirator device constructed and operated in accordance with another preferred embodiment of the present invention.

FIG. 5B is a detailed view of a scalpel used in the aspirator of FIG. 5A.

FIG. 5C is a diagram of another configuration of a scalpel used in the suction device of FIG. 5A.

FIG. 6 is an illustration of an aspirator device constructed and operated in accordance with another preferred embodiment of the present invention.

FIG. 7 is an illustration of an aspirator device constructed and operated in accordance with another preferred embodiment of the present invention.

FIG. 8A is a diagram of an aspirator device constructed and operated in accordance with another preferred embodiment of the present invention.

FIG. 8B is an illustration of an aspirator device constructed and operated in accordance with another preferred embodiment of the present invention.

FIG. 8C is an illustration of an aspirator device constructed and operated in accordance with another preferred embodiment of the present invention.

FIG. 8D is an illustration of an aspirator device constructed and operated in accordance with another preferred embodiment of the present invention.

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Claims (14)

[Claims] 1. A device for ejecting lesions from body cavities and organs, comprising:
A sheath having a suction passage defined therein; a means for providing suction connected to the suction passage; a rotor disposed inside the sheath; An inhalation outlet connectable to means for providing inhalation, and at least one scalpel connected to the rotor for resecting the lesion, wherein the lesion is removed through the inhalation outlet. Device for removing lesions from body cavities and organs. 2. The apparatus of claim 1, further comprising a ribbed resection cage disposed about the at least one resection knife. 3. The device according to claim 1, wherein one of the at least one scalpel is located outside the sheath. 4. The device according to claim 1, wherein at least a part of the sheath is flexible. 5. The device according to claim 1, wherein at least a part of the sheath is disposable. 6. The device according to claim 1, wherein the at least one scalpel is formed in a loop. 7. The device according to claim 1, wherein the at least one scalpel comprises two concave blades arranged radially in the direction of the inlet and outlet. 8. The apparatus according to claim 1, further comprising means for incising said lesion.
An apparatus according to any one of the preceding claims. 9. Apparatus according to claim 8, wherein the means for ablation comprises a correspondingly configured articulating jaw. 10. A method for evacuating a lesion from a body cavity and organ, the method comprising: sucking at least a portion of the lesion; and applying a suction force to the lesion by at least one scalpel. A method for draining a lesion from a body cavity or organ comprising concomitantly applying an ablation action. 11. The method of claim 10, further comprising the step of the at least one scalpel displacing the excised lesion from the body cavity and organ. 12. The method of claim 10, wherein the step of applying a cutting action is performed manually. 13. The method of claim 10, further comprising the step of crushing the excised lesion. 14. The method of claim 10, further comprising a second step of adding inhalation following said milling step.