CN112869833A - Visual puncture outfit - Google Patents

Abstract

Translated fromChinese

本申请属于医疗器械技术领域，尤其涉及一种可视化穿刺器，本申请的可视化穿刺器，通过设置内窥镜和导鞘头组件，便能将导鞘头组件的导杆穿过内窥镜的工作通道，并通过在外侧设有于导杆连接的导鞘头，使得能够通过该导鞘头将内窥镜的一端位置限定，再通过在内窥镜的另一端设置固定夹，使得该内窥镜能够被固定在导鞘头组件上；再将导鞘头组件和内窥镜的组合安装于穿刺组件的穿刺通道内，并通过导鞘头将鞘管开口封堵住，便能防止血液或其他体液从鞘管开口流入，设置有锁紧座，使得导鞘头组件和内窥镜的组合能够被固定于该穿刺通道内。便能辅助医生进行高精度的可视化穿刺，且用尽可能小的手术通道完成手术，降低病患的风险。

The application belongs to the technical field of medical devices, and in particular relates to a visual trocar. The visual trocar of the present application can pass the guide rod of the guide sheath head assembly through the endoscope by setting the endoscope and the guide sheath head assembly. The working channel is provided with a guide sheath head connected to the guide rod on the outside, so that the position of one end of the endoscope can be limited by the guide sheath head, and then the other end of the endoscope is provided with a fixing clip, so that the inner The endoscope can be fixed on the guide sheath head assembly; then the combination of the guide sheath head assembly and the endoscope is installed in the puncture channel of the puncture assembly, and the sheath opening is blocked by the guide sheath head, which can prevent blood Or other body fluids flow in from the sheath opening, and a locking seat is provided, so that the combination of the guide sheath head assembly and the endoscope can be fixed in the puncture channel. It can assist doctors to perform high-precision visual puncture, and use the smallest possible surgical channel to complete the operation, reducing the risk of patients.

Description

Visual puncture outfit

Technical Field

The application belongs to the technical field of medical instrument, especially, relate to a visual puncture ware.

Background

At present, the operation modes of hypertensive cerebral hemorrhage mainly comprise drilling drainage, microscopic hematoma removal and endoscopic external hematoma removal. For the occupied lesion of deep brain tumor, cortex and subcortical brain tissue need to be cut to reach the deep lesion part, and in the process of cutting the brain tissue, the whole process of non-visual operation often needs to draw the normal brain tissue, the brain tissue and the injury and hematoma formation of adjacent blood vessels or nerves are easily caused, if the condition of blood vessel malformation can cause acute sudden conditions such as intracranial hemorrhage and the like, complications such as nerve function defect, cognitive disorder and the like can be caused, the puncture process is completely operated according to the personal experience of a specialist, and the occurrence of channel building deviation, channel instability and even accidental injury of the surrounding normal brain tissue and blood vessels can be caused. The whole operation process still has a great degree of iatrogenic damage to brain tissues. The existing brain surgery mode adopts a balloon to retract brain tissue or uses a brain pressing plate to isolate the brain tissue, which is a non-visible puncture mode and increases puncture risks.

Disclosure of Invention

The utility model provides a visual puncture ware aims at solving the puncture process that adopts among the brain surgery among the prior art and is the invisible puncture, has the technical problem of puncture risk to the disease.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a visual puncture instrument, comprising:

an endoscope having a working channel therethrough;

the sheath head assembly comprises a guide rod penetrating through the working channel, a sheath head connected with the end part of the guide rod and a fixing clamp arranged on the guide rod, and the fixing clamp and the sheath head are respectively positioned on the outer sides of openings at two sides of the working channel;

puncture assembly, including sheath pipe, locking seat and puncture channel, locking seat with the connection can be dismantled to the endoscope, sheath pipe one end with locking seat links to each other, the other end have with the sheath pipe opening of puncture channel intercommunication, puncture channel runs through the sheath pipe with locking seat, the endoscope peg graft in the puncture channel, lead the shutoff of sheath head sheath pipe opening extends to outside the sheath pipe opening.

Further, the diameter of the end part of the sheath tube on the side of the sheath tube opening is gradually reduced from the locking seat to the direction of the sheath tube opening.

Further, the endoscope comprises a control part and an insertion tube, and the insertion tube is detachably connected with the locking seat.

Furthermore, the outer surface of the end part of the sheath guiding head is a circular arc surface.

Further, the curvature of the sheath head is the same as the curvature of the sheath opening.

Further, the locking seat includes unable adjustment base, by unable adjustment base extends the chuck that forms to and lock nut, the chuck includes a plurality of windings the splint that puncture passageway set up, the outside of splint all be equipped with the external screw thread that lock nut corresponds, lock nut can with splint locking and orientation puncture passageway shrink.

Furthermore, the locking seat comprises a fixed base, a sliding block and a pressing piece on the base, the base and the sliding block are enclosed to form the puncture channel, and the pressing piece can rotate to enable the sliding block to retract towards the inside of the puncture channel.

Furthermore, a first elastic piece extending towards the direction of the fixed base is arranged on the sliding block, and the first elastic piece presses the endoscope.

Furthermore, a first puncture groove is formed in the fixed base, a second puncture groove is formed in the sliding block, a sliding block blocking piece covering the fixed base is arranged on the sliding block in an extending mode towards the direction of the fixed base, and the sliding block blocking piece is an elastic sliding block blocking piece.

Furthermore, a second elastic piece extending towards the direction of the sliding block is arranged on the fixed base, and the second elastic piece is located between the sliding blocks of the fixed base and located on the outer side of the puncture channel.

The beneficial effect of this application: according to the visual puncture outfit, the endoscope and the sheath head assembly are arranged, so that a guide rod of the sheath head assembly can penetrate through a working channel of the endoscope, the sheath head connected with the guide rod is arranged on the outer side, one end of the endoscope can be limited through the sheath head, and the endoscope can be fixed on the sheath head assembly by arranging the fixing clamp at the other end of the endoscope; through setting up puncture assembly again, install the combination of guide sheath head subassembly and endoscope in puncture assembly's puncture channel to block up the sheath pipe opening through the guide sheath head, just can prevent that blood or other body fluids from flowing into from the sheath pipe opening, and then influence the detection quality of endoscope, and be provided with the locking seat, make the combination of guide sheath head subassembly and endoscope can be fixed in this puncture channel. Specifically, when a puncture operation needs to be performed on a patient, the endoscope needs to be mounted on the sheath head assembly first, so that the position of the endoscope is fixed, the sheath head assembly and the endoscope are mounted and fixed on the puncture assembly in a combined manner, the sheath tube opening reaches the lesion area of the patient, and then the locking seat and the endoscope are detached, so that a doctor can use a medical instrument to treat the lesion area of the patient from the sheath tube opening. Therefore, the endoscope provides a puncture visual field in real time, assists a doctor in performing high-precision visual puncture, and completes an operation through an operation channel as small as possible, so that the damage of the operation process to the normal brain tissue of a patient is reduced, the recovery period can be shortened, the period of pain of the patient is effectively reduced, and the life quality of the patient is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural view of an endoscope and sheath head assembly provided in accordance with an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a visual puncture outfit provided in an embodiment of the present application;

fig. 3 is a first schematic view illustrating the use of a visual puncture outfit provided in the first embodiment of the present application;

fig. 4 is a schematic use diagram of a visual puncture outfit provided in the first embodiment of the present application;

fig. 5 is a schematic structural diagram of a sheath head according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a chuck according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a fixing base according to an embodiment of the present application;

fig. 8 is a schematic structural view of a fixing base according to a second embodiment of the present application;

fig. 9 is a schematic structural view of a fixing base according to a third embodiment of the present application;

fig. 10 is a schematic structural diagram of a fixing base according to a fourth embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

10-endoscope; 11-a working channel; 12-a control section;

13-an insertion tube;

20-a sheath head assembly; 21-a guide rod; 22-a sheath head;

23, a fixing clamp;

30-a puncture assembly; 31-sheath; 32-a locking seat;

321-a fixed base; 322-a collet; 323-lock nut;

3221-splint; 3211 — a first penetration groove;

324-a slider; 325-pressing piece; 326 — a first resilient member;

327 — a second elastic member; 3241 — second puncture groove; 3242-slider stop;

33-a puncture channel; 34-sheath opening.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-10 are exemplary and intended to be used to illustrate the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Example one

As shown in fig. 1 to 7, an embodiment of the present application provides a visual puncture outfit, including: the endoscope, thepuncture assembly 30 and the sheathguide head assembly 20, the endoscope is provided with a workingchannel 11 penetrating through the endoscope, and particularly, the endoscope can be a flexible endoscope for meeting the actual use requirement, namely, realizing endoscopic detection on the basis of not losing new damage caused by patients; thesheath head assembly 20 comprises aguide rod 21 penetrating through the workingchannel 11, asheath head 22 connected with the end part of theguide rod 21 and afixing clamp 23 arranged on theguide rod 21, thefixing clamp 23 and thesheath head 22 are respectively positioned at the outer sides of openings at two sides of the workingchannel 11, thesheath head 22 is detachably connected with theguide rod 21, so that after theguide rod 21 penetrates through the workingchannel 11, thesheath head 22 is installed on theguide rod 21, the position of the endoscope is fixed, and thefixing clamp 23 is detachably connected in a mode of fixing the endoscope; thepuncture assembly 30 comprises asheath tube 31 and alocking seat 32 arranged at one end of thesheath tube 31, thepuncture assembly 30 is provided with apuncture channel 33 penetrating through thesheath tube 31 and thelocking seat 32, the other end of thesheath tube 31 is provided with a sheath tube opening 34 communicated with thepuncture channel 33, the endoscope is inserted into thepuncture channel 33, thesheath head 22 partially extends out of the sheath tube opening 34 and blocks the sheath tube opening 34, thelocking seat 32 is detachably connected with the endoscope, and thesheath tube 31 is atransparent sheath tube 31.

The visual puncture outfit of the embodiment of the application has the advantages that theguide rod 21 of the sheathguide head assembly 20 can penetrate through the workingchannel 11 of the endoscope by arranging the endoscope and the sheathguide head assembly 20, thesheath guide head 22 connected with theguide rod 21 is arranged on the outer side, so that the position of one end of the endoscope can be limited by thesheath guide head 22, and the endoscope can be fixed on the sheathguide head assembly 20 by arranging thefixing clamp 23 on the other end of the endoscope; thepuncture assembly 30 is arranged, the combination of the sheathguide head assembly 20 and the endoscope is arranged in apuncture channel 33 of thepuncture assembly 30, thesheath opening 34 is sealed by thesheath head 22, so that blood or other body fluid can be prevented from flowing in from thesheath opening 34, the detection quality of the endoscope is further influenced, and thelocking seat 32 is arranged, so that the combination of the sheathguide head assembly 20 and the endoscope can be fixed in thepuncture channel 33. Specifically, when a puncture operation needs to be performed on a patient, the endoscope needs to be mounted on the sheathguide head assembly 20 first, so that the position of the endoscope is fixed, the combination of the sheathguide head assembly 20 and the endoscope is mounted and fixed on thepuncture assembly 30, so that the sheath opening 34 reaches the lesion area of the patient, and then thelocking seat 32 and the endoscope are detached, so that a doctor can use a medical instrument to treat the lesion area of the patient from the sheath opening 34. Therefore, the endoscope provides a puncture visual field in real time, assists a doctor in performing high-precision visual puncture, and completes an operation through an operation channel as small as possible, so that the damage of the operation process to the normal brain tissue of a patient is reduced, the recovery period can be shortened, the period of pain of the patient is effectively reduced, and the life quality of the patient is improved.

Further, as shown in fig. 5, in the present embodiment, the diameter of the end portion of the sheath opening 34 of thesheath 31 is gradually reduced toward the sheath opening 34 by thelocking seat 32. Set up to reduce gradually through the diameter with sheath pipe opening 34 department for can effectively ensure to leadsheath head 22 and can effectively block upsheath pipe opening 34, prevent to permeate to the inside pollution endoscope ofsheath head 22 along the gap between sheath pipe opening 34 and thesheath head 22 at puncture in-process blood, avoid puncture in-process visual field unclear.

Further, as shown in fig. 1 to 2, in the present embodiment, the endoscope includes acontrol portion 12 and aninsertion tube 13, and theinsertion tube 13 is detachably connected to the lockingseat 32. By arranging the endoscope as thecontrol part 12 and theinsertion tube 13, on one hand, the endoscope is flexible, and the hand holding theinsertion tube 13 can cause the endoscope to be fuzzy or pollute the endoscope, thereby affecting the effect of the puncture operation; on the other hand, insertion of theguide rod 21 from thecontrol section 12 and attachment of the endoscope to thesheath head assembly 20 can be facilitated.

Further, as shown in fig. 1 to 2 or 5, in the present embodiment, the outer surface of the end portion of thesheath head 22 is a circular arc surface. By arranging the outer surface of the end of thesheath head 22 as a circular arc surface, on one hand, thesheath head 22 is convenient to block thesheath opening 34; on the other hand, the smooth transition between the extending part of thesheath head 22 and thesheath tube 31 is ensured, the condition that the normal brain tissue is damaged by pulling, squeezing and the like when the combination of thesheath head assembly 20 and the endoscope is taken out is ensured, and the operation safety is effectively ensured.

Further, as shown in fig. 5, in the present embodiment, the curvature of theintroducer sheath 22 is the same as the curvature at thesheath opening 34. The curvature is the rotation rate of the tangential angle to the arc length for a certain point on the curve, and is defined by differentiation, and shows the degree of deviation of the curve from a straight line. For a curve, it is equal to the radius of the arc of the circle closest to the curve at that point. Specifically, when thesheath head 22 partially protrudes out of thesheath opening 34 and blocks thesheath opening 34, thesheath head 22 is completely embedded in one end of thesheath opening 34 of thesheath 31, and thesheath head 22 and thesheath 31 are completely attached to each other, so that the blocking effect between thesheath head 22 and thesheath opening 34 is better, blood is further prevented from entering thesheath 31, and the operation quality of a patient is further ensured.

Further, as shown in fig. 6 to 7, in the present embodiment, the lockingseat 32 includes a fixingbase 321, acollet 322 formed by extending the fixingbase 321, and a lockingnut 323, thecollet 322 includes a plurality of clampingplates 3221 disposed around thepuncture channel 33, the outer sides of theclamping plates 3221 are respectively provided with an external thread corresponding to the lockingnut 323, and the lockingnut 323 can lock theclamping plates 3221 and contract toward thepuncture channel 33. By arranging the fixingbase 321 and thecollet 322, specifically, the diameter of thepuncture channel 33 enclosed by thecollet 322 is slightly larger than that of the endoscope, when the lockingnut 323 and thecollet 322 are correspondingly locked, along with the rotation of the lockingnut 323, the plurality of clampingplates 3221 can be compressed to shrink towards the inside of thepuncture channel 33, so that the diameter of thecollet 322 is gradually smaller than that of thepuncture channel 33, thus, the diameter of thecollet 322 can be adjusted by controlling the lockingnut 323, and the endoscope can be fixed by the plurality of clampingplates 3221. Optionally, the diameter of thepuncture channel 33 in the fixingbase 321 is 40mm, so that the diameter of the clampedsheath 31 can be regulated and controlled within more than 0mm and less than 30mm, and the size of the endoscope adjustably disposed in thesheath 31 can be selected within more than 0mm and less than 30mm, thereby meeting different use requirements.

Example two

In the present embodiment, the endoscope and the sheathguide head assembly 20 are the same as those in the first embodiment, and thesheath 31 in thepuncture assembly 30 is also the same as that in the first embodiment, and only the structure of the lockingseat 32 is different, as shown in fig. 8, in the present embodiment, the lockingseat 32 includes a fixedbase 321, aslider 324 and apressing member 325 on the base, the base and theslider 324 enclose to form thepuncture channel 33, and thepressing member 325 can rotate to retract theslider 324 into thepuncture channel 33. Specifically, the slidingblock 324 and the fixingbase 321 enclose to form thepuncture channel 33, and a gap is formed between the slidingblock 324 and the fixingbase 321, so that the slidingblock 324 can move in the direction of the fixingbase 321, and thus, the diameter of thepuncture channel 33 can be reduced by the pressingmember 325, and the slidingblock 324 penetrating thepuncture channel 33 can press the endoscope by the slidingblock 324, so that the endoscope can be relatively fixed with the lockingbase 32. Specifically, the pressingmember 325 can be fixed when theslide block 324 is connected to the endoscope in a squeezing manner, that is, the position of thepressing member 325 can be maintained, and the endoscope is continuously fixed by the pressingmember 325, alternatively, the pressingmember 325 can be rotated to maintain the position of thepressing member 325 when rotated to a fixed angle, or thepressing member 325 can be screw-locking type, that is, by providing a screw corresponding to the screw-lockingtype pressing member 325 on the lockingseat 32 and abutting the pressingmember 325 against theslide block 324, whether the pressingmember 325 fixes the endoscope can be controlled by adjusting the position of the screw-lockingtype pressing member 325. Of course, the pressingmember 325 may be other structures capable of fixing theslider 324 at a specific position, and is not limited herein.

Further, as shown in fig. 8, in the present embodiment, theslider 324 is provided with a firstelastic member 326 extending toward the inside of thepuncture channel 33, and the firstelastic member 326 is pressed against the endoscope. Optionally, the firstelastic element 326 is a spring, and the arc top of the spring contacts the endoscope, so as to prevent the endoscope from being scratched by the spring when the endoscope is inserted into or taken out of thepuncture channel 33. The sliding block 324 is a concave semicircular arc structure, elastic sheets are arranged on two sides, the fixed base 321 and the sliding block 324 enclose to form a puncture channel 33, in an initial working state, the pressing piece 325 and the sliding block 324 are not contacted, the elastic sheets on the sliding block 324 are in an interference state to ensure that the sliding block 324 is not loosened, the diameter of the puncture channel 33 is larger than that of an endoscope, after the endoscope penetrates into the puncture channel 33 from top to bottom, the circular structure formed by the sliding block 324 and the two semicircular arcs of the fixed base surrounds the endoscope, when the pressing piece 325 is contacted with the sliding block 324, the sliding block 324 is squeezed to move radially inwards, the diameter of the puncture channel 33 formed by the enclosing of the sliding block 324 and the fixed base 321 is smaller than that of the endoscope, the endoscope is clamped and then starts to puncture brain tissue, after the puncture is finished, the pressing piece 325 is upwards pushed, the sliding block 324 rebounds to the initial state under the action, the puncture channel 33 is ensured to be larger than the diameter of the endoscope, so that the endoscope and the sheath guide head assembly 20 can be smoothly withdrawn.

Alternatively, the firstelastic element 326 may be a high polymer elastic material, and specifically, the first elastic element is only an elastic material that can press the endoscope and restore theslide block 324 to the initial position, which is not limited herein.

EXAMPLE III

In the present embodiment, the endoscope and the sheath guidinghead assembly 20 are the same as those in the first embodiment, and thesheath 31 of the puncturingassembly 30 is also the same as that in the first embodiment, only the structure of the lockingseat 32 is different, and thepressing member 325 of the lockingseat 32 in the present embodiment is the same as that in the first embodiment, and therefore, the description thereof is omitted. As shown in fig. 9, further, as shown in fig. 1, in the present embodiment, the fixingbase 321 is provided with afirst puncturing groove 3211, the slidingblock 324 is provided with asecond puncturing groove 3241, the slidingblock 324 extends toward the fixingbase 321 to be provided with a slidingblock stopper 3242 covering the fixingbase 321, and the slidingblock stopper 3242 is an elastic stopper. Specifically, theslider 324 forms a "Y" type structure, when theslider 324 is acted by a force from outside to the center, theslider 324 moves inwards, the angles of the twoslider stoppers 3242 of theslider 324 are increased, the diameter of thepuncture channel 33 formed by thesecond puncture groove 3241 of theslider 324 and thefirst puncture groove 3211 of the fixed base surrounding is gradually reduced to be smaller than the diameter of the endoscope, so as to clamp the endoscope, when the force of theslider 324 is released, theslider 324 is deformed by restoring itself, the angles of the twoslider stoppers 3242 are reduced, the radial direction moves outwards from the center, and the diameter of thepuncture channel 33 formed by thesecond puncture groove 3241 of theslider 324 and thefirst puncture groove 3211 of the fixed base surrounding is larger than the diameter of the endoscope, so as to achieve the separation effect.

Example four

In the present embodiment, the endoscope and the sheath guidinghead assembly 20 are the same as those in the first embodiment, and thesheath 31 of the puncturingassembly 30 is also the same as that in the first embodiment, only the structure of the lockingseat 32 is different, and thepressing member 325 of the lockingseat 32 in the present embodiment is the same as that in the first embodiment, and therefore, the description thereof is omitted. Further, as shown in fig. 10, in the present embodiment, the fixingbase 321 is provided with a secondelastic element 327 extending toward the slidingblock 324, and the secondelastic element 327 is located between the slidingblock 324 and the fixingbase 321 and outside thepuncture channel 33. Specifically, when theslide block 324 is acted by a radial central force, the secondelastic member 327 is compressed and the endoscope is clamped by theslide block 324, and when the external force is released, the secondelastic member 327 releases elastic potential energy to push theslide block 324 to depart from the center, thereby ensuring that the endoscope and thesheath guiding head 22 can exit smoothly.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

Translated fromChinese

1.一种可视化穿刺器，其特征在于，包括：1. a visual trocar, characterized in that, comprising:内窥镜，具有贯穿所述内窥镜的工作通道；an endoscope having a working channel therethrough;导鞘头组件，包括穿过所述工作通道的导杆、与所述导杆端部连接的导鞘头以及设于所述导杆上的固定夹，所述固定夹和所述导鞘头分别位于所述工作通道的两侧开口的外侧；A guide sheath head assembly, including a guide rod passing through the working channel, a guide sheath head connected with the end of the guide rod, and a fixing clip provided on the guide rod, the fixing clip and the guide sheath head are respectively located outside the openings on both sides of the working channel;穿刺组件，包括鞘管、锁紧座和穿刺通道，所述锁紧座与所述内窥镜可拆卸连接，所述鞘管一端与所述锁紧座相连，另一端具有与所述穿刺通道连通的鞘管开口，所述穿刺通道贯穿所述鞘管和所述锁紧座，所述内窥镜插接于所述穿刺通道内，所述导鞘头封堵所述鞘管开口并延伸至所述鞘管开口之外。A puncture assembly, including a sheath tube, a locking seat and a puncture channel, the locking seat is detachably connected to the endoscope, one end of the sheath tube is connected to the locking seat, and the other end has a puncture channel connected to the endoscope The opening of the sheath tube is connected, the puncture channel runs through the sheath tube and the locking seat, the endoscope is inserted into the puncture channel, and the guide sheath head blocks the opening of the sheath tube and extends out of the sheath opening.2.根据权利要求1所述的可视化穿刺器，其特征在于：所述鞘管的所述鞘管开口一侧的端部的直径由所述锁紧座指向所述鞘管开口方向逐渐减小。2 . The visual trocar according to claim 1 , wherein the diameter of the end of the sheath tube on the side of the sheath tube opening gradually decreases from the locking seat to the sheath tube opening direction. 3 . .3.根据权利要求1所述的可视化穿刺器，其特征在于：所述内窥镜包括控制部和插入管，所述插入管与所述锁紧座可拆卸连接。3 . The visual trocar according to claim 1 , wherein the endoscope comprises a control part and an insertion tube, and the insertion tube is detachably connected to the locking seat. 4 .4.根据权利要求2所述的可视化穿刺器，其特征在于：所述导鞘头的端部的外表面为圆弧面。4 . The visual trocar according to claim 2 , wherein the outer surface of the end of the guide sheath head is a circular arc surface. 5 .5.根据权利要求4所述的可视化穿刺器，其特征在于：所述导鞘头的曲率与所述鞘管开口处的曲率相同。5 . The visual trocar according to claim 4 , wherein the curvature of the guide sheath head is the same as the curvature at the opening of the sheath tube. 6 .6.根据权利要求1所述的可视化穿刺器，其特征在于：所述锁紧座包括固定底座、由所述固定底座延伸形成的夹头，以及锁紧螺母，所述夹头包括多个绕所述穿刺通道设置的夹板，所述夹板的外侧均设有与所述锁紧螺母对应的外螺纹，所述锁紧螺母能够将所述夹板锁紧并朝向所述穿刺通道收缩。6 . The visual trocar according to claim 1 , wherein the locking base comprises a fixed base, a collet extending from the fixed base, and a locking nut, the collet comprising a plurality of winding heads. 7 . The splint provided in the puncture channel is provided with external threads corresponding to the locking nut on the outside of the splint, and the locking nut can lock the splint and shrink toward the puncture channel.7.据权利要求1所述的可视化穿刺器，其特征在于：所述锁紧座包括固定底座、滑块以及底座上的按压件，所述底座和所述滑块围合形成所述穿刺通道，所述按压件能够将转动将所述滑块朝向所述穿刺通道内收缩。7 . The visual puncture device according to claim 1 , wherein the locking seat comprises a fixed base, a sliding block and a pressing member on the base, and the base and the sliding block are enclosed to form the puncturing channel. 8 . , the pressing member can rotate to shrink the sliding block toward the puncture channel.8.据权利要求7所述的可视化穿刺器，其特征在于：所述滑块上设有朝向所述固定底座方向延伸的第一弹性件，所述第一弹性件按压于所述内窥镜上。8 . The visual trocar according to claim 7 , wherein the slider is provided with a first elastic member extending toward the fixed base, and the first elastic member is pressed against the endoscope. 9 . superior.9.据权利要求7所述的可视化穿刺器，其特征在于：所述固定底座上开设有第一穿刺槽，所述滑块上开设有第二穿刺槽，所述滑块朝向所述固定底座方向延伸设有包覆所述固定底座的滑块挡件，所述滑块挡件为弹性滑块挡件。9 . The visual puncture device according to claim 7 , wherein a first puncture groove is formed on the fixed base, a second puncture groove is formed on the sliding block, and the sliding block faces the fixed base. 10 . A sliding block stopper covering the fixed base is extended in the direction, and the sliding block stopper is an elastic sliding block stopper.10.据权利要求7所述的可视化穿刺器，其特征在于：所述固定底座上设有朝向所述滑块方向延伸的第二弹性件，所述第二弹性件位于所述固定底座于所述滑块之间且位于所述穿刺通道外侧。10 . The visual trocar according to claim 7 , wherein the fixed base is provided with a second elastic member extending in the direction of the slider, and the second elastic member is located at the position of the fixed base. 11 . between the sliders and outside the puncture channel.

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