CN203328800U - Endoscopic treatment tool and surgical device comprising such a tool - Google Patents

Abstract

The present disclosure relates to endoscopic treatment tools and surgical devices including such tools. The endoscopic processing tool may comprise a sleeve and at least two electrodes, wherein the sleeve is tubular and the electrodes are tubular and circumferentially surrounded by and extend along the sleeve. The electrodes may be coupled to one another in a telescoping nesting manner. Through the scope processing tool that this endoscope processing tool provided and including this endoscope processing tool's surgical operation equipment, can carry out the mucosa tissue of following vertical axis and horizontal axis and peel off under the condition that need not to change scope processing tool.

Description

Endoscopic processing tool and surgical equipment including the tool

technical field

The present disclosure relates to endoscopic treatment tools and surgical equipment including the same.

Background technique

During surgical procedures, in particular endoscopic submucosal dissection (ESD), endoscopic handling tools are used, especially high-frequency knife.

Endoscopic tools with insulated tips, such as ceramic tips (also known as insulated-tipped electrosurgical units), are often used. With this insulated-tip electrosurgical unit, mucosal tissue dissection can be performed along a vertical axis, but sharp dissection may generally not be possible due to the presence of the insulated tip.

Recently, additional endoscopic management tools have emerged, such as the hook knife (Hook knife), triangular tip (TT) knife. This non-insulated endoscopic tool is not insulated at the head, allowing dissection of mucosal tissue along the horizontal axis as well as faster dissection in the submucosal plane. However, such non-insulated endoscopic processing tools are technically demanding and require high precision.

There is a need for an endoscopic treatment tool by which dissection of mucosal tissue along a vertical axis and a horizontal axis can be performed without changing the endoscopic treatment tool.

Utility model content

In this regard, an endoscopic treatment tool and a surgical device including the endoscopic treatment tool are provided.

According to an aspect of the present disclosure, the endoscopic treatment tool may include: a sleeve having a tubular shape; and at least two electrodes having a tubular shape and being surrounded by and extending along the sleeve in a circumferential direction. The electrodes may be coupled to each other in a telescoping nest.

According to an embodiment of the present disclosure, the electrodes may include a first electrode and a second electrode. A first end of the first electrode may be located outside the sleeve and an opposite second end of the first electrode may be located within the sleeve. The second electrode is nestable and slidable within the first electrode such that the endoscopic treatment tool is movable between a first position and a second position in which the second electrode is fully retracted In the first electrode, in the second position, the second electrode may protrude from the first end of the first electrode.

According to an embodiment of the present disclosure, the endoscopic treatment tool may further include an insulating member. The insulating member may have a through hole and may be disposed at the first end of the first electrode. The second electrode is slidable through the through hole.

According to an embodiment of the present disclosure, the endoscope treatment tool may further include a tube member fixed to an end of the cannula. The first electrode can pass through and be fixed in the pipe member.

According to an embodiment of the present disclosure, the endoscope treatment tool may further include a cable, which is passed through the cannula and is mechanically and electrically connected to the second electrode.

According to an embodiment of the present disclosure, the endoscopic treatment tool may further include a first stopper by which a maximum extension of the second electrode from the first electrode may be limited.

According to an embodiment of the present disclosure, the first stopper may include: a bush fixed to the second electrode; and a bush block disposed at the second end of the first electrode. When the second electrode reaches maximum extension, the bushing may abut against the bushing block.

According to an embodiment of the present disclosure, the first stopper may further include a sleeve adjacent to the bush and fixedly holding the second electrode to prevent the bush from sliding relative to the second electrode.

According to an embodiment of the present disclosure, the endoscopic treatment tool may further include a second stopper, by which a maximum retraction of the second electrode in the first electrode may be limited.

According to an embodiment of the present disclosure, the second stopper may include: a tube fixed to the second electrode; and a tube block provided at the second end of the first electrode. When the second electrode reaches maximum retraction, the tube abuts against the tube block.

According to another aspect of the present disclosure, a surgical device is provided. Surgical equipment may include an endoscopic treatment tool according to any of the above embodiments.

According to an embodiment of the present disclosure, the surgical device may further include an operating portion. The operation part may include: a handle for operation, a slide member, and a connection button. The sliding part can slide back and forth along the handle and is mechanically connected with the endoscopic treatment tool. The connecting button can be electrically connected with the endoscope processing tool and transmit high-frequency current to the endoscope processing tool.

With the endoscopic treatment tool and the surgical device including the endoscopic treatment tool provided by the present disclosure, mucosal tissue dissection along the vertical axis and the horizontal axis can be performed without changing the endoscopic treatment tool.

Based on the implementation, other technical features of the present disclosure will be apparent to those skilled in the art.

Description of drawings

Specifically, describe in detail with reference to accompanying drawing, in accompanying drawing:

1 shows a cross-sectional view of an endoscopic treatment tool according to an embodiment of the present application, wherein a second electrode protrudes from a first end of a first electrode;

Figure 2 shows a view similar to that of Figure 1 with the second electrode fully retracted into the first electrode; and

Figure 3 shows a schematic view of a surgical device according to an embodiment of the application.

Detailed ways

In the following description, the term "near" is used to indicate an end of an object that is adjacent to an operator operating the object, whereas the term "distal" is used to indicate an end of an object that is remote from an operator.

In an embodiment, for example, referring to FIGS. 1 and 2 , an endoscopic treatment tool 10 according to an aspect of the present disclosure may include a cannula 100 . In the illustrated embodiment, the cannula 100 may be formed in a tubular shape to accommodate elements such as electrodes, cables, etc. (described below). Furthermore, the cannula 100 may be configured to be flexible, for example, to facilitate introduction of endoscopic treatment tools into a body cavity.

As shown in the figure, the endoscopic treatment tool 10 may include a tubular electrode for incision (ie, first electrode) 200 and a tubular electrode for pre-cutting (ie, second electrode) 300 . Both electrodes 200, 300 are made of conductive material to achieve diathermic dissection.

In an embodiment, for example referring also to FIGS. 1 and 2 , the second electrode 300 may be located in a channel formed in the tubular first electrode 200 and thus be nested within the first electrode 200 . Specifically, as shown in FIGS. 1 and 2 , the distal end (ie, the first end) 210 of the first electrode 200 may be located outside the cannula 100 , and the proximal end (ie, the opposite second end) of the first electrode 200 ) 220 may be located within the casing 100 .

Additionally, the second electrode 300 may be configured to slide through a channel formed in the tubular first electrode 200 . Thus, the endoscope treatment tool 10 can be moved between the first position and the second position, wherein as shown in FIG. As shown, in the second position, the second electrode 300 can protrude from the first end 210 of the first electrode 200 .

As shown in Figures 1 and 2, in an embodiment (not shown), as described above, the second electrode 300 is formed in the shape of a tube and thus has a conduit open at both its distal and proximal ends, for example from a syringe pump A specific dye or stain for tissue staining can be delivered to the site where ESD is performed.

In other embodiments (not shown), the endoscopic treatment tool may include more than two electrodes. Each of these electrodes is formed in a tubular shape and is circumferentially surrounded by and extends along a sleeve. Furthermore, the electrodes can be coupled to each other in a telescoping nest.

In an embodiment, for example, referring to FIGS. 1 and 2 , an insulating element 400 may be provided at the first end 210 of the first electrode 200 . The insulating element 400 can be made of insulating material such as ceramics. As shown in the figure, the insulating element 400 is provided with a through hole 410 , and the first end 210 of the first electrode 200 is disposed in the through hole 410 .

In an embodiment, referring eg to FIG. 1 , the through hole 410 of the insulating member 400 is dimensioned such that the second electrode 300 can slide through the through hole 410 . In addition, the through hole 410 may be configured as a stepped hole. In other embodiments, the through holes 410 may be configured to have a uniform diameter.

In an embodiment, for example referring to FIG. 1 and FIG. 2 , a tube member 110 is fixed at the distal end (that is, the end) of the cannula 100 to fix the first electrode 200 . In the illustrated embodiment, the tube member 110 may be configured to be generally tubular and sandwiched between the cannula 100 and the first electrode 200 . Furthermore, the tube member 110 is dimensioned and designed such that the first electrode 200 is fixed to the cannula 100 .

In other embodiments (not shown), the distal end of the cannula 100 can be configured such that the first electrode 200 is passed through and fixed to the cannula 100 , thus omitting a separate member, such as a tube member.

In an embodiment, for example referring to FIGS. 1 and 2 , the endoscopic treatment tool 10 may further include a cable 500 . The cable 500 passes through the casing 100 and is mechanically and electrically connected to the second electrode 300 .

In an embodiment, for example referring to FIGS. 1 and 2 , a first stopper 600 may be provided such that the maximum extension of the second electrode 300 from the first electrode 200 is limited. Specifically, the first stopper 600 may include a bush 610 and a bush block 630 to achieve the above-mentioned limitation. As shown in FIGS. 1 and 2 , the bushing 610 may hold the first electrode 200 and thus be fixed to the first electrode 200 such that the bushing 610 may move together with the first electrode 200 . In addition, the bushing block 630 can be fixed on the second end 220 of the first electrode 200 . Thus, when the second electrode 300 protrudes to a desired extent, that is, when the second electrode 300 reaches the maximum extension, the bushing 610 abuts the bushing block 630 so that the second electrode 300 cannot move further .

In an embodiment, for example referring to FIGS. 1 and 2 , a sleeve 620 may be provided adjacent to the bushing 610 , specifically at a proximal end of the bushing 610 . The sleeve 620 may fixedly hold the second electrode 300 to prevent the bush 610 from sliding relative to the second electrode 300 , in other words, the bush 610 may be fixed.

In other embodiments (not shown), the first stop may not have a sleeve, and the bushing is dimensioned such that the bushing cannot move relative to the first electrode after being installed.

In other embodiments (not shown), the first stop means may not have a bushing block, so that the bushing abuts against the second end of the first electrode when the second electrode is extended and reaches maximum extension.

In an embodiment, for example referring to FIGS. 1 and 2 , a second stopper 700 may be provided to limit the maximum indentation of the second electrode 300 in the first electrode 200 . In the illustrated embodiment, the second stop device 700 may include a tube 710 disposed near the distal end of the first electrode 200 such that the tube 710 may move together with the first electrode 200 . Thus, as shown in FIG. 2, when the second electrode 300 is retracted to the desired extent in the first electrode 200, that is, when the second electrode 300 reaches the maximum retraction, the tube 710 abuts against the first electrode. 200 proximal medial.

In the illustrated embodiment, the second stopping device 700 may further include a separate tube block 720 installed inside the proximal end of the above-mentioned first electrode 200 . Thus, the tube 710 abuts against the tube block 720 when the second electrode reaches maximum retraction.

In an embodiment, referring eg to Fig. 3, there is shown a surgical device 1 according to another aspect of the present disclosure, which may eg be used in an ESD procedure. As shown in Fig. 3, the surgical device 1 may comprise an endoscopic treatment tool according to any of the above-described embodiments.

In an embodiment, for example referring to FIG. 3 , the surgical device 1 may further include an operating portion 20 . As shown in FIG. 3 , the operating part 20 may include a handle 21 for operation by an operator, and a sliding part 22 mechanically connected to the proximal end of the cable 500 . In addition, the sliding member 22 may be configured to slide back and forth along the handle 21, so that when the sliding member 22 slides along the handle 21 under the operator's operation, the cable 500 may move along the sheath 100, so that the second electrode 300 may Move across the first electrode 200 .

As shown in FIG. 3 , the operation part 20 may further include a connection button 23 . The connection button 23 can be configured to be electrically connected to the proximal end of the cable 500 on the one hand and to be electrically connected to an RF generating line (not shown) for generating high-frequency current on the other hand. Thus, the high-frequency current can be transmitted to the endoscopic treatment tool 10 via the cable 500, specifically to the second electrode 300, and then to the first electrode 200 when the second electrode 300 is fully retracted into the first electrode 200 .

It is to be understood that, while particular embodiments have been shown and described above, it will be apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the disclosure. These modifications and variations fall within the scope and teaching of the present disclosure as defined by the claims.

Claims (12)

1. The endoscopic treatment tool (10), characterized in that the endoscopic treatment tool (10) comprises: a sleeve (100), in the form of a tube; and at least two electrodes (200, 300), tubular in shape and circumferentially surrounded by and extending along said sleeve (100), Wherein the electrodes (200, 300) are connected to each other in a telescopic nesting manner. 2. The endoscope treatment tool (10) according to claim 1, characterized in that the electrodes comprise a first electrode (200) and a second electrode (300), Wherein the first end (210) of the first electrode (200) is located outside the sleeve (100), and the opposite second end (220) of the first electrode (200) is located outside the sleeve ( 100), The second electrode (300) is sheathed in the first electrode (200) and can slide in the first electrode (200), and the endoscope treatment tool (10) can be in the first position with varies between a second position in which the second electrode (300) is fully retracted into the first electrode (200) and in the second position in which the second electrode (300) protruding from the first end (210) of the first electrode (200). 3. The endoscopic treatment tool (10) according to claim 2, characterized in that the endoscopic treatment tool (10) further comprises an insulating element (400), wherein the insulating element (400) has a through hole ( 410) and arranged at the first end (210) of the first electrode (200), and the second electrode (300) can slide through the through hole (410). 4. The endoscopic treatment tool (10) according to claim 3, characterized in that, the endoscopic treatment tool (10) further comprises a pipe member (110), and the pipe member (110) is fixed to the sleeve The end of the tube (100), wherein the first electrode (200) is passed through and fixed in the tube member (110). 5. The endoscope treatment tool (10) according to any one of claims 2-3, characterized in that, the endoscope treatment tool (10) further comprises a cable (500), and the cable (500) ) is passed through the casing (100) and is mechanically and electrically connected to the second electrode (300). 6. The endoscopic treatment tool (10) according to claim 5, characterized in that, the endoscopic treatment tool (10) further comprises a first stop device (600), through which the first stop device ( 600), the maximum extension of the second electrode (300) from the first electrode (200) can be limited. 7. The endoscope treatment tool (10) according to claim 6, characterized in that, the first stop device (600) comprises: a bushing (610), fixed to the second electrode (300); and a bushing block (630), disposed at the second end (220) of the first electrode (200), Wherein the bushing (610) abuts against the bushing block (630) when the second electrode (300) reaches the maximum extension. 8. The endoscope treatment tool (10) according to claim 7, characterized in that, the first stopper (600) further comprises a sleeve (620), and the sleeve (620) is adjacent to the The bushing (610) and fixedly holds the second electrode (300), preventing the bushing (610) from sliding relative to the second electrode (300). 9. The endoscopic treatment tool (10) according to claim 7, characterized in that, the endoscopic treatment tool (10) further comprises a second stop device (700), through which the second stop device ( 700), the maximum indentation of the second electrode (300) in the first electrode (200) can be limited. 10. The endoscope treatment tool (10) according to claim 9, characterized in that, the second stop device (700) comprises: a tube (710), secured to said second electrode (300); and a tube block (720), disposed at the second end (220) of the first electrode (200), Wherein when the second electrode (300) reaches the maximum retraction, the tube (710) abuts against the tube block (720). 11. Surgical device (1 ), characterized in that it comprises an endoscopic treatment tool according to any one of the preceding claims. 12. The surgical device (1) according to claim 11, characterized in that, the surgical device (1) further comprises an operating part (20), and the operating part (20) comprises: Operating handle (21); a sliding part (22), capable of sliding back and forth along the handle (21) and mechanically connected with the endoscopic treatment tool; and The connection button (23) is electrically connected with the endoscope treatment tool and transmits high-frequency current to the endoscope treatment tool.

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