CN209186862U

CN209186862U - Annular incision knife

Info

Publication number: CN209186862U
Application number: CN201821799833.9U
Authority: CN
Inventors: 丁震; 蔺蓉; 丁梓航
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-01
Filing date: 2018-11-01
Publication date: 2019-08-02
Anticipated expiration: 2028-11-01

Abstract

The utility model provides a kind of annular incision knife, is related to the field of medical instrument technology, and main purpose is to provide a kind of annular incision knife for not influencing seal wire placement.The annular incision knife includes handle, outer catheter and inner catheter, and handle includes proximal segment, hand-held part and distal section, and proximal segment connects side with hand-held part equipped with proximal electrode, and distal section connects side with hand-held part equipped with remote electrode；Handle is the cavity structure that distal end has an opening, and outer catheter passes through cavity and moves along the length direction of cavity relative to opening sliding；Outer catheter is hollow tubular structure, and inner catheter slides movement through setting in outer catheter and relative to outer catheter；Outer catheter is electrically connected far from becket, becket is equipped at handle with remote electrode, and inner catheter is equipped with ferrule, and ferrule is electrically connected with proximal electrode；Outer catheter is equipped with a through-hole at becket, and through-hole runs through the side that outer catheter is arranged in.The utility model is used to provide a kind of annular incision knife more convenient to use.

Description

Annular incision knife

Technical field

The utility model relates to the field of medical instrument technology, cut more particularly, to annular used in a kind of surgical operation Knife.

Background technique

Common surgical instrument of the tumour incision knife as surgical operation, the knife are circular configuration, mainly utilize active electrode The high-frequency high-voltage current generated is held constantly to organize to gasify or solidify by the tissue of high impedance to be cut.It is used in electrosurgery In the process, resistance caused by endless knife is about from 100 Ω -2000 Ω.With the solidification of tissue, gas can occur for the water in cell Change, keeps tissue dry, cause resistance to be continuously increased, last electric current stops completely.Small using electric knife notch, cutting speed is fast, stops Blood effect is good, easy to operate, safe ready, greatly shortens operating time, reduces patient's blood loss, thus reduce complication and Surgery cost.After cutting by tumour position of the electric knife to patient, need to place seal wire to affected part, to import bracket Or drainage tube.During placing seal wire, seal wire cannot be contacted with the cutting part of endless knife, otherwise can generate electric shock, because This, generally requires first to remove or thoroughly remove endless knife the section components of endless knife, and removes endless knife and will affect seal wire The precision of placement.

Utility model content

The purpose of this utility model is to provide a kind of annular incision knifes, are made with solving endless knife existing in the prior art With inconvenient technical problem.

To achieve the above object, the utility model provides a kind of annular incision knife, including handle, outer catheter and interior leads Pipe, in which:

The handle includes proximal segment, hand-held part and distal section, and the handgrip part is between the proximal segment and the distal section, institute It states proximal segment and connects side with the hand-held part equipped with proximal electrode, the distal section connects side with the hand-held part equipped with distal end electricity Pole；

The handle is the tubular structure with cavity and its axis direction is equipped with close to the distal section side and is open, described Outer catheter passes through the cavity and moves along the length direction of the cavity relative to opening sliding；

The outer catheter is hollow tubular structure, and the inner catheter is through setting in the outer catheter and relative to described Outer catheter sliding movement；

The outer catheter is electrically connected far from becket, the becket is equipped at the handle with the remote electrode, institute Inner catheter is stated equipped with ferrule, the ferrule is electrically connected with the proximal electrode；

The outer catheter is equipped with a through-hole at the becket, and the through-hole runs through the week that the outer catheter is arranged in Side.

By the way that through-hole is arranged on outer catheter, puncture procedure can be carried out to affected part in outer catheter or produce circular knife edge Seal wire is directly placed to corresponding position by the through-hole afterwards and facilitates subsequent placement bracket or drainage device for maintaining the access； Electrode and the becket and ferrule that are electrically connected respectively with two electrodes there are two being set on the annular incision knife, therefore the incision A complete circuit pathways can be formed on knife, be powered at becket and ferrule to realize, which is being powered Under state have cutting function, can the position opposite to becket or ferrule cut.

In the above-mentioned technical solutions, it is preferred that the inner catheter is hollow tubular structure, and the ferrule exists through setting It slides on the inner catheter and relative to the inner catheter and moves.

When in use, when carrying out cutting or further expansion edge of a knife size to affected part if necessary to becket, in order to avoid Ferrule causes accidentally to cut to its hetero-organization of patient, ferrule can be placed on the hollow of inner catheter by mobile ferrule In structure.

In the above-mentioned technical solutions, it is preferred that the ferrule is acicular texture.

When needing ferrule to cut the affected part of patient, acicular ferrule has higher cutting efficiency and trouble The edge of a knife at place is minimum, is conducive to patient's later period and restores.

In the above-mentioned technical solutions, it is preferred that the length of the inner catheter is not more than the length of the outer catheter.

When needing becket to cut affected part, need to pack up inner catheter, it is therefore desirable to which the length that inner catheter is arranged is little In outer catheter length.

In the above-mentioned technical solutions, it is preferred that further include sealing element, the sealing element is for sealing the through-hole.

When entering seal wire to outer catheter interpolation, in order to avoid seal wire is in contact with becket so as to cause electric shock, because This needs to be equipped with through-hole in the other positions of outer catheter, so that seal wire be made to pass through the through-hole, avoids and metallic rings contact.

In the above-mentioned technical solutions, it is preferred that the sealing element is fixed at described logical by way of interference fit At hole.

In the above-mentioned technical solutions, it is preferred that the sealing element is hat-shaped structure.

In the above-mentioned technical solutions, it is preferred that the sealing element is rotary fixture.

In the above-mentioned technical solutions, it is preferred that the side of the outer catheter is additionally provided with branch pipe, and the through-hole is along the branch pipe Axially penetrate through the branch pipe, be equipped with external screw thread on the outside of the branch pipe, the corresponding position of the rotary fixture be equipped with The internal screw thread that the external screw thread matches.

The branch pipe and the rotary fixture are threadably secured connection, to close the through-hole.

In the above-mentioned technical solutions, it is preferred that rubber pad is equipped with inside the rotary fixture.

Rubber pad is set in rotary fixture, when the rotary fixture is threadedly coupled with branch pipe, rubber pad It is extruded by pressure, so as to preferably close the channel, guarantees that device is air tight after tightening.

In the above-mentioned technical solutions, it is preferred that further include seal wire, the seal wire is through setting in the outer catheter.

In the above-mentioned technical solutions, it is preferred that the free end of the branch pipe towards the outer catheter is obliquely installed.

By setting branch pipe towards the inclination of the free end of outer catheter in order to which seal wire is passed through from through-hole.

In the above-mentioned technical solutions, it is preferred that the outer catheter is equipped with groove, and the peripheral side diameter of the groove is less than The peripheral side diameter of the outer catheter, the internal diameter of the becket are identical as the peripheral side diameter of the groove.

In the above-mentioned technical solutions, it is preferred that the outer diameter of the becket is identical as the outer diameter of the outer catheter.

Compared with the prior art, the utility model provides a kind of annular incision knife, which includes handle, outside Conduit and inner catheter, wherein outer catheter is through being arranged in handle, inner catheter through being arranged in outer catheter, due to inner catheter and It is equipped with metal assembly on outer catheter and the metal assembly is connected with two electrodes being arranged on handle respectively, to constitute electricity Road access, and then realize the incision function of the annular incision knife, since the free end of outer catheter is equipped with through-hole, in reality Now on the basis of the cutting function of the incision knife, also imparts the incision knife and place the function that seal wire is positioned.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the utility model annular incision knife；

Fig. 2 is the structural schematic diagram of the outer catheter in Fig. 1；

Fig. 3 is the structural schematic diagram of the sealing element in the utility model annular incision knife；

Fig. 4 is second of structural schematic diagram of the utility model annular incision knife.

In figure: 1, handle；11, proximal segment；12, hand-held part；13, distal section；2, outer catheter；21, becket；22, through-hole；23, Groove；3, inner catheter；31, ferrule；4, proximal electrode；5, remote electrode；6, sealing element.

Specific embodiment

To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work Obtained all other embodiment is put, the range that the utility model is protected is belonged to.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on attached orientation or positional relationship shown in FIG. 1, be only for Convenient for description the utility model and simplify description, rather than the equipment of indication or suggestion meaning or element must have specifically Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Attached drawing 1 is the structural schematic diagram of the utility model annular incision knife；As can be seen from the figure annular incision knife master It to be made of handle, outer catheter and inner catheter.

Attached drawing 2 is the structural schematic diagram of the outer catheter in Fig. 1；As can be seen from the figure the free end of outer catheter is equipped with through-hole And groove, metal ring are located on groove.

Attached drawing 3 is the structural schematic diagram of the sealing element in the utility model annular incision knife；As can be seen from the figure this is close Sealing is cap-like structure.

Attached drawing 4 is second of structural schematic diagram of the utility model annular incision knife；As can be seen from the figure the annular is cut It operates on and is mainly made of handle, outer catheter and inner catheter, and inner catheter is located in outer catheter.

As shown in Figs 1-4, the utility model provides a kind of annular incision knife, including handle 1, outer catheter 2 and inner catheter 3, in which: handle 1 includes proximal segment 11, hand-held part 12 and distal section 13, and hand-held part 12 is between proximal segment 11 and distal section 13, proximal segment 11 Side connect with hand-held part 12 equipped with proximal electrode 4, distal section 13 connects side with hand-held part 12 equipped with remote electrode 5；Handle 1 is Tubular structure with cavity and its axis direction are equipped with close to 13 side of distal section to be open, and outer catheter 2 passes through cavity and along cavity Length direction relative to opening sliding movement；Outer catheter 2 is hollow tubular structure, and inner catheter 3 is through setting in outer catheter 2 And it slides and moves relative to outer catheter 2；For outer catheter 2 far from becket 21 is equipped at handle 1, becket 21 and remote electrode 5 are electric Connection, inner catheter 3 are equipped with ferrule 31, and ferrule 31 is electrically connected with proximal electrode 4；Outer catheter 2 is set at becket 21 There is a through-hole 22, through-hole 22 runs through the side that outer catheter 2 is arranged in.

Specifically, the becket 21 has preferable cutting function after being powered, material is preferably stainless steel.

Specifically, the becket 21 is fixed at the free end end of outer catheter 2.

Optionally embodiment, inner catheter 3 are hollow tubular structure, and ferrule 31 is through setting on inner catheter 3 And it slides and moves relative to inner catheter 3.

When in use, when carrying out cutting or further expansion edge of a knife size to affected part if necessary to becket 21, in order to keep away Exempt from ferrule 31 its hetero-organization of patient is caused accidentally to cut, ferrule 31 can be placed on by interior lead by mobile ferrule 31 In the hollow structure of pipe 3；Since outer catheter 2 is hollow structure, the sliding of inner catheter 3 is moved in outer catheter 2 at this time, to make Becket 21 can directly contact affected part, be convenient for cutting or expanding edge of a knife diameter.

Optionally embodiment, ferrule 31 are acicular texture.

When needing ferrule 31 to cut the affected part of patient, acicular ferrule 31 has higher cutting efficiency And the edge of a knife in affected part is minimum, being conducive to patient's later period restores.

Specifically, needing to pack up inner catheter 3, it is therefore desirable to inner catheter 3 be arranged when needing becket to cut affected part Length is not more than 2 length of outer catheter.

Specifically, inner catheter 3 can be packed up and is inserted into handle 1, at this time due to being hollow structure inside handle 1 The length of inner catheter 3 be likely larger than the length of outer catheter.

Specifically, a length of 4-6Fr in the periphery of inner catheter 3, a length of 8-12Fr in the periphery of outer catheter 2.

Specifically, work as a length of 5Fr in periphery of inner catheter 3, when a length of 10Fr in the periphery of outer catheter 2, the annular incision knife Using effect is best.

Specifically, ferrule 31 is acicular texture, a diameter of 0.5-1.2mm, optimum diameter 1mm.

Optionally embodiment further includes sealing element 6, and sealing element 6 is for sealing through-hole 22.

When being inserted into seal wire into outer catheter 2, in order to avoid seal wire is in contact with becket 21 so as to cause electric shock, Therefore need in the other positions of outer catheter 2 be arranged through-hole 22, thus make seal wire pass through the through-hole 22 enter affected part, avoid with Becket 21 contacts.

Optionally embodiment, sealing element 6 are fixed at through-hole 22 by way of interference fit.Specifically , which is made of elastic material.

Specifically, the sealing element 6 is made of rubber material.

Optionally embodiment, sealing element 6 are hat-shaped structure.

Specifically, the through-hole 22 is ellipsoidal structure or square structure.

Specifically, the through-hole 22 is circle, sealing element 6 at this time is made of two different cylindrical bodies of diameter.

Optionally embodiment, sealing element 6 are rotary fixture.

Internal screw thread is equipped at through-hole 22, the sealing element 6 of hat is equipped with external screw thread corresponding with internal screw thread, by inside and outside Screw thread, which cooperates, can be fixed at sealing element 6 on outer catheter 2 by through-hole 22, to close through-hole 22.

Optionally embodiment, the side of outer catheter 2 are additionally provided with branch pipe, and through-hole 22 axially penetrates through branch along branch pipe Pipe, branch pipe outside are equipped with external screw thread, and the corresponding position of rotary fixture is equipped with the internal screw thread matched with external screw thread, branch pipe It is threadably secured connection with rotary fixture, to close the through-hole.

Optionally embodiment, rotary fixture inside are equipped with rubber pad.

Optionally embodiment further includes seal wire, and seal wire is through setting in outer catheter 2.

The free end of optionally embodiment, branch pipe towards outer catheter 2 is obliquely installed.

By setting branch pipe towards the inclination of the free end of outer catheter 2 in order to which seal wire is passed through from through-hole 22.

Optionally embodiment, outer catheter 2 are equipped with groove 23, and the peripheral side diameter of groove 23 is less than outer catheter 2 Peripheral side diameter, the internal diameter of becket 21 and the peripheral side diameter of groove 23 are identical.

Specifically, groove 23 is located at the free end of outer catheter 2；When the internal diameter of becket 21 and the peripheral side diameter of groove 23 When identical, becket can be set in just on groove 23.

The outer diameter of optionally embodiment, becket 21 is identical as the outer diameter of outer catheter 2.

Specifically, being additionally provided with switch at the handle of the annular incision knife, it is connected to or disconnects for control circuit.

Specifically, it is also provided with ergonomics groove on 12 surface of hand-held part of the annular incision knife, in order to Doctor preferably can grasp and manipulate to handle, it should be noted that without departing from the scope of the utility model the case where Under, the surface of hand-held part 12 can construct the groove or abutment for facilitating any value volume and range of product of ergonomics operation. The surface of hand-held part 12 is also provided with soft grip coating (for example, thermoplastic elastic part) or another surface modification or coating To help to operate.

The annular incision knife when in use, needs that proximal electrode and remote electrode is made to be connected with power supply, required voltage About 2.0KVp-p is about 80-120W using power.

Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power Subject to the protection scope that benefit requires.

Claims

1. annular incision knife, which is characterized in that including handle (1), outer catheter (2) and inner catheter (3), in which:

The handle (1) includes proximal segment (11), hand-held part (12) and distal section (13), and the hand-held part (12) is located at the proximal segment (11) between the distal section (13), the proximal segment (11) connects side with the hand-held part (12) equipped with proximal electrode (4), institute It states distal section (13) and connects side with the hand-held part (12) equipped with remote electrode (5)；

The handle (1) is the tubular structure with cavity and its axis direction is equipped with close to the distal section (13) side and is open, The outer catheter (2) passes through the cavity and moves along the length direction of the cavity relative to opening sliding；

The outer catheter (2) is hollow tubular structure, and the inner catheter (3) is in the outer catheter (2) and opposite through setting It slides and moves in the outer catheter (2)；

The outer catheter (2) is equipped with becket (21) at separate the handle (1), the becket (21) and the remote electrode (5) it is electrically connected, the inner catheter (3) is equipped with ferrule (31), and the ferrule (31) is electrically connected with the proximal electrode (4) It connects；

The outer catheter (2) is equipped with a through-hole (22) at the becket (21), and the through-hole (22) is through setting in institute State the side of outer catheter (2).

2. annular incision knife according to claim 1, which is characterized in that the inner catheter (3) is hollow tubular structure, institute It states ferrule (31) and slides movement through setting on the inner catheter (3) and relative to the inner catheter (3).

3. annular incision knife according to claim 1 or 2, which is characterized in that the ferrule (31) is acicular texture.

4. annular incision knife according to claim 1, which is characterized in that the length of the inner catheter (3) is no more than described The length of outer catheter (2).

5. annular incision knife according to claim 1, which is characterized in that it further include sealing element (6), the sealing element (6) For sealing the through-hole (22).

6. annular incision knife according to claim 5, which is characterized in that the side that the sealing element (6) passes through interference fit Formula is fixed at the through-hole (22).

7. annular incision knife according to claim 5, which is characterized in that the sealing element (6) is hat-shaped structure.

8. annular incision knife according to claim 1, which is characterized in that further include seal wire, the seal wire exists through setting In the outer catheter (2).

9. annular incision knife according to claim 1, which is characterized in that the outer catheter (2) is equipped with groove (23), institute The peripheral side diameter for stating groove (23) is less than the peripheral side diameter of the outer catheter (2), the internal diameter of the becket (21) and institute The peripheral side diameter for stating groove (23) is identical.

10. annular incision knife according to claim 9, which is characterized in that the outer diameter of the becket (21) and described outer The outer diameter of conduit (2) is identical.