Surgical opening device

Abstract

The present application relates to the field of medical devices, and in particular to a surgical opening device, comprising: a bracket, a connecting shaft, a guide head, and a prompt structure. The bracket comprises a mounting tube; the connecting shaft can be slidably installed in the mounting tube in the axial direction of the mounting tube, and a groove is provided on the shaft wall of the connecting shaft; the guide head is connected to one end of the connecting shaft, and the guide head can slide along the axial direction of the mounting tube with the connecting shaft. The guide head has a preset position, and the guide head is in the preset position when the surgical opening device completely cuts off the tissue to be cut; the prompt structure is installed on the bracket, and the prompt structure includes a prompt member and an elastic member. The prompt member can be slidably installed on the bracket, and the prompt member can collide with the groove wall of the groove to emit a prompt sound. The elastic member can provide an elastic force to the prompt member so that the prompt member can collide with the groove wall of the groove when the guide head slides to the preset position. The surgical opening device of the present invention can prompt the operator whether the tissue has been completely cut.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a surgical opening device. Background Art

[0002] During the process of using a surgical opening device to punch tissue, the operator usually cannot see the cutting status of the tissue, that is, the operator cannot determine whether the tissue has been cut. If the tissue has not been cut, the operator will remove the surgical opening device, which will cause the tissue to be torn, resulting in heavy bleeding or even organ damage. Summary of the Invention

[0003] The purpose of this application is to provide a surgical opening device that can reduce surgical risks.

[0004] This application is implemented as follows:

[0005] A surgical opening device, comprising:

[0006] a bracket, including a mounting barrel;

[0007] A connecting shaft is slidably provided in the axial direction of the mounting tube and penetrates the mounting tube, and a groove is provided on the shaft wall of the connecting shaft;

[0008] a guide head connected to one end of the connecting shaft, the guide head being able to slide along the connecting shaft in the axial direction of the mounting tube, the guide head and the mounting tube being provided with a cutting edge on a side close to the other, the guide head having a preset position relative to the mounting tube, the guide head being in the preset position when the surgical opening device completely cuts off the tissue to be cut;

[0009] The prompt structure installed on the bracket includes a prompt member and an elastic member. The prompt member can be slidably installed on the bracket. The prompt member can collide with the groove wall of the groove to emit a prompt sound. The elastic member can provide an elastic force to the prompt member so that the prompt member can collide with the groove wall of the groove when the guide head slides to the preset position.

[0010] Optionally, the prompt structure further includes a positioning member connected to the bracket, the positioning member is provided with a receiving groove, and the receiving groove has a notch;

[0011] The elastic member is accommodated in the accommodating groove, the prompt member is arranged at the notch, and the prompt member can be at least partially located outside the accommodating groove. The elastic member can provide the prompt member with an elastic force that can cause the prompt member to slide in a direction away from the accommodating groove.

[0012] Optionally, the positioning member can abut against the prompt member, so that the positioning member can prevent the prompt member from escaping from the accommodating groove through the notch.

[0013] Optionally, the prompting member is spherical, at least half of the prompting member is accommodated in the accommodating groove, and the diameter of the notch of the accommodating groove is smaller than the diameter of the prompting member;

[0014] And / or, an anti-slip structure is provided at the notch of the accommodating groove, and the anti-slip structure can abut against the prompt member to prevent the prompt member from escaping from the accommodating groove.

[0015] Optionally, the bracket is provided with a screw hole, and the positioning member is screwed into the screw hole.

[0016] Optionally, the surgical opening device further includes an elastic reset member;

[0017] A limiting ring is protruding from the side wall of the connecting shaft, and the limiting ring is located in the mounting cylinder;

[0018] The inner wall surface of the installation cylinder is provided with a limiting protrusion;

[0019] The elastic return member is accommodated in the mounting tube and is located between the limiting protrusion and the limiting ring. One end of the elastic return member elastically abuts against the limiting protrusion, while the other end elastically abuts against the limiting ring.

[0020] The bracket further comprises an end cover connected to the mounting tube, and the end cover can abut against a side of the limiting ring away from the elastic return member to restrict the limiting ring in the mounting tube.

[0021] Optionally, the prompt structure further includes a positioning member connected to the bracket, the positioning member is provided with a receiving groove, and the receiving groove has a notch; the elastic member is received in the receiving groove, the prompt member is arranged at the notch, and the prompt member can be at least partially located outside the receiving groove, and the elastic member can provide the prompt member with an elastic force that can cause the prompt member to slide in a direction away from the receiving groove;

[0022] The connecting shaft is slidably and rotatably provided on the end cover. A screw hole penetrating the inner wall and the outer wall of the end cover is provided on the end cover. The positioning member is screwed into the screw hole.

[0023] Optionally, the end cover includes a threaded portion and a mounting portion fixed to the threaded portion, the threaded portion and the mounting tube are threadedly connected away from the guide head, the connecting shaft is slidably and rotatably passed through the threaded portion and the mounting portion, and the prompt structure is mounted on the mounting portion.

[0024] Optionally, the prompting member can roll relative to the elastic member, and when the connecting shaft slides in the axial direction of the mounting cylinder, the prompting member can roll on the connecting shaft.

[0025] Optionally, a shaft wall of the connecting shaft is provided with a prompt mark, and the prompt mark can be revealed when the guide head is in the preset position;

[0026] And / or, the prompting member has an outwardly convex arc surface, and the arc surface can collide with the groove wall of the groove.

[0027] The technical effect of the present application is that after the above-mentioned surgical opening device cuts the tissue, the prompt piece will collide with the groove under the action of the elastic piece and make a prompt sound to prompt the operator that the tissue cutting has been completed, allowing the operator to confirm that the cutting is completed, and avoiding the operator removing the surgical opening device without cutting the tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 is a three-dimensional diagram of a surgical opening device provided in an embodiment of the present application;

[0030] Figure 2 yes Figure 1 Cross-sectional view in the AA direction;

[0031] Figure 3 is an exploded view of a surgical opening device provided in an embodiment of the present application;

[0032] Figure 4 This is a partial structural perspective diagram of a surgical opening device provided in an embodiment of the present application, which includes a connecting shaft, an end cover, and a prompt structure;

[0033] Figure 5 yes Figure 4 A top view of

[0034] Figure 6 yes Figure 5 Cross-sectional view in the AA direction;

[0035] Figure 7 is a three-dimensional diagram of a prompt structure in a surgical opening device provided in an embodiment of the present application;

[0036] Figure 8 is a cross-sectional view of a prompt structure in a surgical opening device provided in an embodiment of the present application;

[0037] Figure 9 It is an exploded view of the prompt structure in the surgical opening device provided in an embodiment of the present application.

[0038] Description of Figure Numbers:

[0039] Label name Label name 100 bracket 110 Installation barrel 112 Limiting protrusion 120 End cap 121 Screw joint 122 Installation Department 101 screw holes 200 connecting shaft 201 groove 210 Limiting ring 220 Prompt 300 Guide head 400 Prompt structure 410 Prompt 420 elastic parts 430 Positioning parts 4301 Container 431 Matching structure 500 Elastic return element DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0041] An embodiment of the present application provides a surgical opening device, particularly a surgical opening knife for opening a hole in tissue (such as a heart, etc.).

[0042] See also Figures 1 to 9 A surgical opening device according to one embodiment includes a bracket 100 , a connecting shaft 200 , a guide head 300 and a prompt structure 400 .

[0043] The support 100 serves as a structural support for the entire surgical opening device, and is used for mounting other related components of the surgical opening device. The support 100 includes a mounting tube 110 .

[0044] The mounting cylinder 110 is substantially in the shape of a hollow column.

[0045] The connecting shaft 200 can be slidably disposed in the mounting tube 110 in the axial direction of the mounting tube 110. Specifically, the connecting shaft 200 can also rotate relative to the mounting tube 110. A groove 201 is provided on the shaft wall of the connecting shaft 200.

[0046] The guide head 300 is connected to one end of the connecting shaft 200. The guide head 300 can slide along the axial direction of the mounting cylinder 110 along with the connecting shaft 200. A blade is provided on one side of at least one of the guide head 300 and the mounting cylinder 110 close to the other. The guide head 300 has a preset position relative to the mounting cylinder 110. When the surgical opening device completely cuts off the tissue to be cut, the guide head 300 is in the preset position. In the embodiment shown in the figure, the preset position is Figure 1 and Figure 2 The position of the middle guide head 300 relative to the mounting tube 110 is also the normal state of the surgical opening device, that is, the state when not in use.

[0047] In one embodiment, the guide head 300 is detachably connected to the connecting shaft 200, for example, by a snap-fit ​​connection or a screw connection. In this embodiment, a cutting edge is provided on the side of the guide head 300 proximate to the mounting cylinder 110, and a cutting edge is also provided on the side of the mounting cylinder 110 proximate to the guide head 300. Specifically, the guide head 300 is capable of rotating with the connecting shaft 200. During tissue cutting, the tissue is clamped between the cutting edge of the mounting cylinder 110 and the cutting edge of the guide head 300. Rotating the connecting shaft 200 drives the guide head 300 to rotate, thereby achieving tissue cutting.

[0048] The prompt structure 400 is mounted on the bracket 100 and includes a prompt member 410 and an elastic member 420. The prompt member 410 is capable of sliding and colliding with the wall of the groove 201 to produce a prompt sound. The elastic member 420 can provide an elastic force to the prompt member 410, so that the prompt member 410 collides with the wall of the groove 201 when the guide head 300 slides to a preset position. That is, when the connecting shaft 200 slides upward along the axial direction of the mounting cylinder 110, when the guide head 300 slides to the preset position, the prompt member 410 collides with the wall of the groove 201 under the elastic force of the elastic member 420, producing a prompt sound. The prompt sound is a "click" or "click" sound, which notifies the operator that the tissue cutting is complete.

[0049] The surgical opening device is used to open a hole in human or animal tissue (e.g., cardiac tissue) to facilitate subsequent intubation, installation of auxiliary devices (e.g., a ventricular assist pump), and other operations. During the incision process using the surgical opening device, after the surgical opening device cuts tissue, the prompt member 410, under the force of the elastic member 420, will collide with the groove wall of the groove 201, emitting a prompt sound to inform the operator that the tissue cutting is complete, thereby preventing the operator from removing the surgical opening device before the tissue is cut.

[0050] Based on the structural design of the surgical opening device of the present application, during use, first, a common cutting tool in the prior art is used to cut a cross incision on the tissue. Second, the staff holds the surgical opening device by holding the mounting cylinder 110. The staff applies a force to the connecting shaft 200 to allow the connecting shaft 200 to slide along the axial direction of the mounting cylinder 110, and move the mounting cylinder 110 and the guide head 300 away from each other, pass the guide head 300 through the cross incision, and then move the guide head 300 and the mounting cylinder 110 closer to each other. After the tissue is clamped between the guide head 300 and the mounting cylinder 110, rotate the connecting shaft 200 to cut the tissue. After the tissue is completely cut, the guide head 300 returns to the preset position. At this time, the prompt member 410 collides with the groove wall of the groove 201 under the action of the elastic force of the elastic member 420 and emits a prompt sound. After hearing the prompt sound, the operator determines that the tissue has been cut.

[0051] In the illustrated embodiment, the groove 201 is arranged along the circumference of the connecting shaft 200, and the elastic member 420 is a coil spring, an elastic sleeve, etc. The prompting member 410 is capable of sliding in a direction perpendicular to the axial direction of the mounting cylinder 110. In one embodiment, the prompting member 410 has an outwardly convex curved surface that can collide with the groove wall of the groove 201.

[0052] In one embodiment, if Figure 3 as well as Figures 6 to 9 The prompting structure 400 further includes a positioning member 430 connected to the bracket 100. The positioning member 430 defines a receiving groove 4301, and the prompting member 410 is capable of being at least partially positioned outside the receiving groove 4301. The receiving groove 4301 has a notch. The elastic member 420 is received in the receiving groove 4301, and the prompting member 410 is disposed at the notch. The elastic member 420 is capable of providing an elastic force to the prompting member 410 that causes the prompting member 410 to slide away from the receiving groove 4301. In this manner, the prompting member 420 can remain at least partially outside the receiving groove 4301 under the elastic force provided by the elastic member 420 when no external force is applied toward the interior of the receiving groove 4301. Alternatively, when the external force applied toward the interior of the receiving groove 4301 is removed, the prompting member 420 can return to being at least partially positioned outside the receiving groove 4301 under the elastic force provided by the elastic member 420.

[0053] In one embodiment, if Figure 3 And 6 pictures to Figure 9 The positioning member 430 can abut against the prompting member 410, so that the positioning member 430 can prevent the prompting member 410 from separating from the receiving groove 4301 through the notch. Specifically, the receiving groove 4301 further has a groove bottom opposite to the notch. The two ends of the elastic member 420 elastically abut against the groove bottom of the receiving groove 4301 and the prompting member 410, respectively. When the positioning member 430 abuts against the prompting member 410, it can provide a force to the prompting member 410 in a direction opposite to the elastic force provided by the elastic member 420, thereby preventing the prompting member from separating from the positioning member 430. In this way, the prompting member 410 and the elastic member 420 can be moved and installed together with the positioning member 430. That is, the prompting structure 400 can be assembled separately. When assembling the surgical opening device, the prompting structure 400 can be assembled as a whole to the mounting tube 110 without the need to assemble the prompting member 410 and the elastic member 420 separately, thereby improving the assembly efficiency of the prompting structure 400.

[0054] In one embodiment, if Figure 3 And 6 pictures to Figure 9The prompting member 410 is spherical and can be either solid or hollow. At least half of the prompting member 410 is contained within the receiving groove 4301. The diameter of the notch of the receiving groove 4301 is smaller than the diameter of the prompting member 410, thereby enabling the positioning member 430 to prevent the prompting member 410 from escaping from the receiving groove 4301. In one embodiment, the prompting structure 400 is manufactured by installing the prompting member 410 and the elastic member 420 into a cylindrical member having the receiving groove 4301. The groove wall of the cylindrical member at the notch is then squeezed inward to reduce the diameter of the notch, thereby obtaining the prompting structure 400.

[0055] The method for preventing the prompt member 410 from escaping from the receiving groove 4301 is not limited to the method described above. In another embodiment, an anti-slip structure is provided at the notch of the receiving groove 4301. The anti-slip structure can abut against the prompt member 410 to prevent the prompt member 410 from escaping from the receiving groove. Specifically, the anti-slip structure is a protrusion provided at the notch of the receiving groove 4301. The protrusion can be annular or dot-shaped in shape. If the anti-slip structure is dot-shaped, multiple anti-slip structures can be provided and spaced around the axis of the positioning member 430 on the groove wall of the receiving groove 4301 near the notch.

[0056] In one embodiment, the connection between the positioning member 430 and the bracket 100 is a detachable connection, for example, a snap connection, a screw connection, etc. Specifically, the bracket 100 has a screw hole 101, and the positioning member 430 is screwed into the screw hole 101. In this way, during use, the prompt structure 400 can be simply rotated to achieve the disassembly and assembly of the bracket 100, which is simple and convenient.

[0057] In one embodiment, the positioning member 430 has a matching structure 431 that can cooperate with an external tool. When the external tool cooperates with the matching structure 431, it drives the positioning member 340 to rotate, so as to achieve threaded matching between the positioning member 430 and the screw hole 101, thereby achieving the assembly and disassembly of the positioning member 430. Specifically, the external tool can be a screwdriver. In the embodiment shown in the figure, the matching structure 431 is constructed as a countersunk hole that can cooperate with the screwdriver, which can be a straight countersunk hole, a cross countersunk hole, or a hexagonal countersunk hole. In this way, when it is necessary to disassemble the prompt structure 400, only the corresponding screwdriver needs to be selected to perform the disassembly operation. In the embodiment shown in the figure, the matching structure 431 is located at the end of the positioning member 340 away from the notch, that is, it is opened at the bottom of the accommodating groove 4301.

[0058] During the specific cutting process of the surgical opening device, the installation cylinder 110 and the guide head 300 need to be moved away from each other first and then moved closer together. When the installation cylinder 110 and the guide head 300 need to be moved closer together, if there is no other structure to assist, the staff needs to manually push the installation cylinder 110 and the guide head 300 closer together, which causes great inconvenience to the staff.

[0059] To solve the above problem, in one embodiment, Figure 2 and Figure 3 As shown, the surgical opening device also includes an elastic return member 500. A limiting ring 210 is protruding from the side wall of the connecting shaft 200, and the limiting ring 210 is located within the mounting tube 110. A limiting protrusion 112 is protruding from the inner wall of the mounting tube 110. In the illustrated embodiment, the limiting protrusion 112 is annular in shape, but can also be in the form of a convex dot. If the limiting protrusion 112 is in the form of a convex dot, in a specific embodiment, multiple limiting protrusions 112 can be provided, spaced circumferentially along the inner wall of the mounting tube 110. The elastic return member 500 is housed within the mounting tube 110 and is located between the limiting protrusion 112 and the limiting ring 210. One end of the elastic return member 500 elastically abuts the limiting protrusion 112, while the other end elastically abuts the limiting ring 210.

[0060] The bracket 100 further includes an end cap 120 connected to the mounting tube 110 . The end cap 120 can abut against a side of the limiting ring 210 away from the elastic return member 500 to restrict the limiting ring 210 in the mounting tube 110 .

[0061] In this embodiment, the prompt structure 400 is mounted on the end cap 120. Specifically, the connecting shaft 200 is slidably and rotatably disposed through the end cap 120. The end cap 120 is provided with a screw hole 101 extending through both the inner and outer walls of the end cap 120. The positioning member 430 is screwed into the screw hole 101. This allows for easy and convenient assembly and disassembly of the prompt structure 400 and the end cap 120 by simply rotating the prompt structure 400. In other embodiments, the end cap 120 can also be mounted on the mounting tube 110.

[0062] The connection between the end cap 120 and the mounting tube 110 can be a fixed connection, such as welding, or a detachable connection, such as a snap connection, a screw connection, etc. The prompt structure 400 is mounted on the end cap 120. Specifically, in this embodiment, the end cap 120 includes a screw connection portion 121 and a mounting portion 122 fixedly connected to the screw connection portion 121. The screw connection portion 121 is screwed to the mounting tube 122. The connecting shaft 200 is slidably and rotatably disposed through the screw connection portion 121 and the mounting portion 122. The prompt structure 400 is mounted on the mounting portion 122. In this way, by screwing the screw connection portion 121 to the mounting tube 122, the end cap 120 can be connected to the mounting tube 110.

[0063] Specifically, in this embodiment, the screw hole 101 is provided on the mounting portion 122 . During use, the prompt structure 400 can be rotated to realize the disassembly and assembly of the prompt structure 400 and the mounting portion 122 , which is simple and convenient.

[0064] Based on this structure, first, after the guide head 300 and the mounting tube 110 are moved away from each other, under the action of the elastic force of the elastic return member 500, the guide head 300 will return in the direction close to the mounting tube 110, without the need for staff to manually push the mounting tube 110 and the guide head 300 closer to each other; secondly, the prompt structure 400 is connected to the end cover 120 and can be disassembled and assembled to the mounting tube 110 together with the end cover 120.

[0065] In one embodiment, the prompt member 410 is capable of rolling relative to the elastic member 420, and the prompt member 410 is capable of rolling on the connecting shaft 200 when the connecting shaft 200 slides axially of the mounting cylinder 110. Thus, the contact between the prompt member 410 and the connecting shaft 200 is rolling contact, which can effectively reduce the frictional resistance between the prompt member 410 and the connecting shaft 200, reduce the impact of the prompt structure 400 on the operator's operating feel, and ensure the operator's operating feel.

[0066] In one embodiment, if Figures 2 to 4 As shown, the shaft wall of the connecting shaft 200 is provided with a prompt mark 220, which can be exposed when the guide head 300 is in a preset position. Since the tissue has been cut when the guide head 300 is in the preset position, during specific use, if the operator does not hear the prompt sound emitted by the prompt structure 400 or notices the prompt sound emitted by the prompt structure 400, the operator can judge whether the tissue has been cut by observing the prompt mark 220.

[0067] In a specific embodiment, the identification information of the prompt mark 220 can be in the form of text, letters, graphics (for example, in this embodiment, the identification information of the prompt mark 220 is in the form of a triangle) and scale marks, etc. The prompt mark 220 can be formed by being concave or convex on the shaft wall of the connecting shaft 200, or can be formed by coating with paint.

[0068] In one embodiment, at least two prompt structures 400 are provided and are arranged at equal intervals along the circumference of the mounting tube 110. In this embodiment, two prompt structures 400 are provided.

[0069] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A surgical opening device, characterized in that: include: a bracket, including a mounting barrel; a connecting shaft, the connecting shaft being slidably disposed in the mounting tube in the axial direction of the mounting tube and being rotatable relative to the mounting tube; a groove being formed on the shaft wall of the connecting shaft, the groove being arranged in an annular shape along the circumference of the connecting shaft; a guide head connected to one end of the connecting shaft, the guide head being able to slide along the connecting shaft in the axial direction of the mounting tube, the guide head and the mounting tube being provided with a cutting edge on a side close to the other, the guide head having a preset position relative to the mounting tube, the guide head being in the preset position when the surgical opening device completely cuts off the tissue to be cut; The prompt structure installed on the bracket includes a prompt member and an elastic member. The prompt member can slide and collide with the groove wall of the groove to emit a prompt sound. The elastic member can provide an elastic force to the prompt member so that the prompt member can collide with the groove wall of the groove when the guide head slides to the preset position.

2. The surgical opening device according to claim 1, wherein: The prompt structure further includes a positioning member connected to the bracket, wherein the positioning member is provided with a receiving groove, and the receiving groove has a notch; The elastic member is accommodated in the accommodating groove, the prompt member is arranged at the notch, and the prompt member can be at least partially located outside the accommodating groove. The elastic member can provide the prompt member with an elastic force that can cause the prompt member to slide in a direction away from the accommodating groove.

3. The surgical opening device according to claim 2, wherein: The positioning member can abut against the prompt member, so that the positioning member can prevent the prompt member from escaping from the accommodating groove through the notch.

4. The surgical opening device according to claim 3, wherein: The prompting member is spherical, at least half of the prompting member is accommodated in the accommodating groove, and the diameter of the notch of the accommodating groove is smaller than the diameter of the prompting member; And / or, an anti-slip structure is provided at the notch of the accommodating groove, and the anti-slip structure can abut against the prompt member to prevent the prompt member from escaping from the accommodating groove.

5. The surgical opening device according to claim 2, wherein: The bracket is provided with a screw hole, and the positioning piece is screwed into the screw hole.

6. The surgical opening device according to claim 1, wherein: The surgical opening device further includes an elastic reset member; A limiting ring is protruding from the side wall of the connecting shaft, and the limiting ring is located in the mounting cylinder; The inner wall surface of the installation cylinder is provided with a limiting protrusion; The elastic return member is accommodated in the mounting tube and is located between the limiting protrusion and the limiting ring. One end of the elastic return member elastically abuts against the limiting protrusion, while the other end elastically abuts against the limiting ring. The bracket further comprises an end cover connected to the mounting tube, and the end cover can abut against a side of the limiting ring away from the elastic return member to restrict the limiting ring in the mounting tube.

7. The surgical opening device according to claim 6, wherein: The prompt structure further includes a positioning member connected to the bracket, the positioning member defining a receiving groove, the receiving groove having a notch; the elastic member being received in the receiving groove, the prompt member being disposed at the notch, and the prompt member being capable of being at least partially located outside the receiving groove, the elastic member being capable of providing the prompt member with an elastic force capable of causing the prompt member to slide in a direction away from the receiving groove; The connecting shaft is slidably and rotatably provided on the end cover. A screw hole penetrating the inner wall and the outer wall of the end cover is provided on the end cover. The positioning member is screwed into the screw hole.

8. The surgical opening device according to claim 6, wherein: The end cover includes a threaded portion and a mounting portion fixed to the threaded portion, the threaded portion is threadedly connected to the mounting tube, the connecting shaft is slidably and rotatably passed through the threaded portion and the mounting portion, and the prompt structure is mounted on the mounting portion.

9. The surgical opening device according to any one of claims 1 to 8, characterized in that: The prompting member can roll relative to the elastic member, and when the connecting shaft slides in the axial direction of the mounting tube, the prompting member can roll on the connecting shaft.

10. The surgical opening device according to any one of claims 1 to 8, characterized in that: A reminder mark is provided on the shaft wall of the connecting shaft, and the reminder mark can be revealed when the guide head is in the preset position; And / or, the prompting member has an outwardly convex arc surface, and the arc surface can collide with the groove wall of the groove.

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