Flexible surgical instrument guide sleeve and surgical guide structure

Abstract

The utility model relates to a flexible surgical instrument guide sleeve and a surgical guide structure. The flexible surgical instrument guide sleeve comprises a plurality of cylindrical sleeve bodies, the sleeve bodies at least comprise first sleeve sections and second sleeve sections, the second sleeve sections can be movably arranged on the outer sides of the first sleeve sections in a sleeving mode in the axial direction, the first sleeve sections and the second sleeve sections are matched to form a telescopic sleeve structure, the interiors of the first sleeve sections are communicated with the interiors of the second sleeve sections, and the interiors of the first sleeve sections are communicated with the interiors of the second sleeve sections. A guide channel for the flexible surgical instrument to pass through is formed; the second sleeve section and the first sleeve section are provided with a first limiting part and a second limiting part respectively, and the second sleeve section can move to the position where the first limiting part abuts against the second limiting part relative to the first sleeve section so as to limit the axial moving positions of the first sleeve section and the second sleeve section. The technical problem that when the slender flexible surgical instrument is delivered outside the body of a patient, the risk of operation bending exists is solved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, and further relates to a flexible surgical instrument guide sleeve and a surgical guide structure, and is particularly suitable for a slender flexible surgical instrument guide sleeve and a surgical guide structure. Background Art

[0002] Vascular interventional surgery is a surgical procedure in which interventional doctors operate puncture needles, catheters, guidewires, balloons, stents and other interventional devices under the guidance of medical imaging equipment, and deliver the designated devices along the human blood vessels to the corresponding lesion site after percutaneous puncture for treatment. As a minimally invasive treatment method, vascular interventional surgery has been widely used in the interventional treatment of cardiovascular diseases, cerebrovascular diseases, peripheral vascular diseases and tumors.

[0003] In the existing surgical model, interventional doctors need to wear lead suits (usually weighing 20-30 kilograms) and stand next to the operating table for a long time to operate interventional instruments such as catheters and guidewires. The lead suit cannot completely block X-ray radiation, and the arms and head are directly exposed to X-rays. Interventional doctors work in an X-ray radiation environment for many years, which can easily lead to high incidence of occupational diseases such as cataracts, spinal curvature, and brain tumors. Interventional doctors use robotic systems to control the delivery of interventional instruments such as catheters and guidewires, which can effectively improve doctors' working conditions, reduce physical exertion and reduce occupational hazards, allowing doctors to fully focus on the surgical treatment itself, bringing better surgical treatment results to patients.

[0004] In the process of using a robotic system to control the delivery of interventional devices such as catheters and guidewires, the slender and flexible surgical instruments (such as catheters, guidewires, etc.) used in vascular interventional surgery need to operate outside the patient's body for a period of time. During this process, due to the slenderness and flexibility of the surgical instruments, there is a risk of bending during operation, which can cause inaccurate delivery of the instrument tip and have a great impact on the surgical operation.

[0005] Regarding the related art, there is a problem that when slender and flexible surgical instruments are delivered outside the patient's body, there is a risk of bending during operation.

[0006] Therefore, the inventor, relying on many years of experience and practice in related industries, proposes a flexible surgical instrument guide sleeve and a surgical guide structure to overcome the defects of the prior art. Utility Model Content

[0007] The purpose of the utility model is to provide a flexible surgical instrument guide sleeve and a surgical guide structure, which can be used to guide and limit slender flexible surgical instruments during the delivery process, ensure the accurate delivery of the slender flexible surgical instruments, effectively reduce the risk of bending of the slender flexible surgical instruments during the delivery process, and improve the success rate of the operation.

[0008] The purpose of the utility model can be achieved by adopting the following scheme:

[0009] The utility model provides a flexible surgical instrument guide sleeve, which comprises a plurality of cylindrical sleeve bodies;

[0010] The plurality of sleeve bodies at least include a first sleeve segment and a second sleeve segment, the second sleeve segment is axially movable and sleeved on the outside of the first sleeve segment, the first sleeve segment cooperates with the second sleeve segment to form a telescopic sleeve structure, the interior of the first sleeve segment is connected with the interior of the second sleeve segment to form a guide channel for the flexible surgical instrument to pass through;

[0011] The second sleeve segment and the first sleeve segment have a first limiting portion and a second limiting portion respectively, and the second sleeve segment can move relative to the first sleeve segment to a position where the first limiting portion and the second limiting portion abut against each other, so as to limit the axial movement position of the first sleeve segment and the second sleeve segment.

[0012] In a preferred embodiment of the present invention, the first limiting portion includes a slide groove located on the second sleeve segment, and the second limiting portion includes a limiting block located on the first sleeve segment, and the limiting block can be slidably embedded in the slide groove, and the limiting block can offset at least part of the position of the slide groove to limit the axial movement position of the first sleeve segment and the second sleeve segment.

[0013] In a preferred embodiment of the present invention, the first limiting portion includes a first limiting step located on the inner wall of the second sleeve segment, and the second limiting portion includes a second limiting step located on the outer wall of the first sleeve segment, and the first limiting step can offset the second limiting step to limit the axial movement position of the first sleeve segment and the second sleeve segment.

[0014] In a preferred embodiment of the present invention, at least one end of the sleeve body is provided with a connection portion for detachably connecting to a surgical robot.

[0015] In a preferred embodiment of the present invention, the connecting portion includes a first connecting portion and / or a second connecting portion.

[0016] The first connection portion includes a flange joint;

[0017] The second connection portion includes a threaded structure.

[0018] In a preferred embodiment of the present invention, the slide groove is a strip groove extending along the axial direction of the sleeve body, the slide groove is connected to the interior of the second sleeve section, and a limiting boss extending toward the inside of the slide groove is provided at the end of the slide groove or near the end thereof, and the limiting block can slide to a position against the limiting boss.

[0019] In a preferred embodiment of the present invention, there are multiple slide grooves, and the multiple slide grooves are spaced apart along the circumference of the second sleeve section;

[0020] There are multiple limit blocks, which are spaced apart along the circumference of the first sleeve section. The limit blocks correspond to the slide grooves one by one, so that the limit blocks can be slidably embedded in the corresponding slide grooves respectively.

[0021] In a preferred embodiment of the present invention, the first limiting step is located at the end of the second sleeve section or on the inner wall near its end; and / or the second limiting step is located at the end of the first sleeve section or on the outer wall near its end.

[0022] In a preferred embodiment of the present invention, the sleeve body further comprises a third sleeve segment, the third sleeve segment is movably sleeved on the outside of the second sleeve segment in the axial direction, the first sleeve segment, the second sleeve segment and the third sleeve segment cooperate to form the telescopic sleeve structure, the interior of the first sleeve segment, the interior of the second sleeve segment and the interior of the third sleeve segment are interconnected to form the guide channel;

[0023] A first limiting portion and a second limiting portion for matching and limiting are provided between the third sleeve segment and the second sleeve segment. The third sleeve segment can move relative to the second sleeve segment to a position where the first limiting portion and the second limiting portion abut against each other, so as to limit the axial movement position of the second sleeve segment and the third sleeve segment.

[0024] In a preferred embodiment of the present invention, the sleeve body includes a plurality of sleeve segments, the number of which is greater than or equal to 4, and between two adjacent sleeve segments, one of the sleeve segments can move along the axial direction and is limitedly sleeved on the outside of the other sleeve segment, and the plurality of sleeve segments cooperate to form the telescopic sleeve structure, and the interiors of the plurality of sleeve segments are interconnected to form the guide channel;

[0025] Between two adjacent sleeve sections, the sleeve section located on the outside has a first limiting portion, and the sleeve section located on the inside has a second limiting portion, and the first limiting portion cooperates with the second limiting portion to limit the axial movement position of the two adjacent sleeve sections.

[0026] The utility model provides a surgical guide structure, which comprises:

[0027] The above-mentioned flexible surgical instrument guide sleeve;

[0028] A flexible surgical instrument, at least part of which passes through the guide channel of the flexible surgical instrument guide sleeve.

[0029] In a preferred embodiment of the present invention, the flexible surgical instrument comprises a surgical catheter or a guide wire.

[0030] In a preferred embodiment of the present invention, the inner diameter of the guide channel is larger than the diameter of the catheter or the diameter of the guide wire.

[0031] As described above, the characteristics and advantages of the flexible surgical instrument guide sleeve and the surgical guide structure of the utility model are: the flexible surgical instrument guide sleeve comprises at least a first sleeve section and a second sleeve section, the second sleeve section can be axially movably sleeved on the outside of the first sleeve section to form a retractable sleeve structure, the interior of the first sleeve section is connected with the interior of the second sleeve section, and a guide channel for the flexible surgical instrument to pass through can be formed; during the operation, the flexible surgical instrument is at least partially located outside the patient's body and is inserted into the guide channel, which plays a guiding and protective role for the flexible surgical instrument, ensures the accurate delivery of the flexible surgical instrument, effectively reduces the risk of bending during the delivery of the flexible surgical instrument, and ensures the success rate of the operation; in addition, since the first limiting portion and the second limiting portion are respectively provided on the second sleeve section and the first sleeve section, the axial movement position of the first sleeve section and the second sleeve section is limited, the stability of the extended state of the first sleeve section and the second sleeve section is ensured, and the success rate of the operation is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0033] Figure 1 : This is one of the structural schematic diagrams of the flexible surgical instrument guide sleeve of the utility model in the extended state.

[0034] Figure 2 : Figure 1 A schematic diagram of the structure of the connection position between the first casing section and the second casing section.

[0035] Figure 3 :for Figure 2 A partial enlarged view of position A in the middle.

[0036] Figure 4 : Figure 1 A cross-sectional view of the connection position between the first casing section and the second casing section.

[0037] Figure 5 :for Figure 4 A partial enlarged view of position B in the middle.

[0038] Figure 6 : It is a front view of the flexible surgical instrument guide sleeve of the utility model in the retracted state.

[0039] Figure 7 :for Figure 6 Cross-sectional view along CC direction.

[0040] Figure 8 : It is a structural schematic diagram of a guide wire inserted into a guide sleeve of a flexible surgical instrument of the present invention.

[0041] Fig. 9 : This is the second structural schematic diagram of the flexible surgical instrument guide sleeve in the extended state of the utility model.

[0042] The accompanying drawings in the present utility model are as follows:

[0043] 1. casing body; 101. first casing section;

[0044] 102, second casing section; 103, third casing section;

[0045] 104. First connecting portion; 105. Second connecting portion;

[0046] 106. slide groove; 1061. limiting boss;

[0047] 107. Limit block; 108. Guide channel;

[0048] 109. First limiting convex step; 110. Second limiting convex step;

[0049] 2. Flexible surgical instruments. DETAILED DESCRIPTION

[0050] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0051] Implementation Method 1

[0052] like Figures 1 to 9As shown, the utility model provides a flexible surgical instrument guide sleeve, which includes a plurality of cylindrical sleeve bodies 1; the plurality of sleeve bodies 1 at least include a first sleeve segment 101 and a second sleeve segment 102, the second sleeve segment 102 can be axially movably sleeved on the outside of the first sleeve segment 101, the first sleeve segment 101 and the second sleeve segment 102 cooperate to form a telescopic sleeve structure, the interior of the first sleeve segment 101 is connected with the interior of the second sleeve segment 102 to form a guide channel 108 for the flexible surgical instrument 2 to pass through; the second sleeve segment 102 is provided with a first limiting portion, and the first sleeve segment 101 is provided with a second limiting portion, the second sleeve segment 102 can move relative to the first sleeve segment 101 to a position where the first limiting portion and the second limiting portion are abutted, so as to limit the axial movement position of the first sleeve segment 101 and the second sleeve segment 102 by the first limiting portion and the second limiting portion.

[0053] In the present invention, the flexible surgical instrument guide sleeve comprises at least a first sleeve section 101 and a second sleeve section 102. The second sleeve section 102 can be axially movably sleeved on the outside of the first sleeve section 101 to form a telescopic sleeve structure. The interior of the first sleeve section 101 is connected with the interior of the second sleeve section 102 to form a guide channel 108 for the flexible surgical instrument 2 to pass through. During the operation, the flexible surgical instrument 2 is at least partially located outside the patient's body and is inserted into the guide channel 108. The guide channel 108 guides and protects the flexible surgical instrument 2. Ensure the precise delivery of the flexible surgical instrument 2, effectively reduce the risk of bending of the flexible surgical instrument 2 during the delivery process, ensure that the flexible surgical instrument 2 can smoothly enter the patient's body and reach the affected area directly, and ensure the success rate of the operation; in addition, since the second sleeve segment 102 and the first sleeve segment 101 respectively have a first limiting portion and a second limiting portion, the axial movement position of the first sleeve segment 101 and the second sleeve segment 102 can be limited by cooperating with the first limiting portion and the second limiting portion, thereby ensuring the stability of the extended state of the first sleeve segment 101 and the second sleeve segment 102, and further improving the success rate of the operation.

[0054] In an optional implementation of the present invention, Figures 1 to 8 As shown, the first limiting portion includes a slide groove 106 located on the second sleeve segment 102, and the second limiting portion includes a limiting block 107 located on the first sleeve segment 101. The limiting block 107 can be slidably embedded in the slide groove 106, and the limiting block 107 can offset at least part of the position of the slide groove 106 to limit the axial movement position of the first sleeve segment 101 and the second sleeve segment 102.

[0055] In another optional implementation of the present invention, Fig. 9As shown, the first limiting portion includes a first limiting step 109 located on the inner wall of the second sleeve segment 102, and the second limiting portion includes a second limiting step 110 located on the outer wall of the first sleeve segment 101. The first limiting step 109 can offset the second limiting step 110 to limit the axial movement position of the first sleeve segment 101 and the second sleeve segment 102.

[0056] Further, such as Fig. 9 As shown, the first limiting step 109 is located at the end of the second sleeve segment 102 or on the inner wall near its end; and / or, the second limiting step 110 is located at the end of the first sleeve segment 101 or on the outer wall near its end, so as to increase the extendable length of the flexible surgical instrument guide sleeve.

[0057] In an optional embodiment of the present invention, Figure 1 , Figure 8 As shown, the sleeve body 1 also includes a third sleeve segment 103, which can be axially movably sleeved on the outer side of the second sleeve segment 102, and the first sleeve segment 101 and the second sleeve segment 102 can perform axial telescopic movement, and the second sleeve segment 102 and the third sleeve segment 103 can also perform axial telescopic movement; the first sleeve segment 101, the second sleeve segment 102 and the third sleeve segment 103 cooperate to form a telescopic sleeve structure, and the interior of the first sleeve segment 101, the interior of the second sleeve segment 102 and the interior of the third sleeve segment 103 are interconnected to form a guide channel 108; the third sleeve segment 103 is provided with a slide groove 106, and the second sleeve segment 102 is provided with a limiting block 107, and the limiting block 107 cooperates with the slide groove 106 to limit the axial movement position of the second sleeve segment 102 and the third sleeve segment 103. During actual use, the telescopic state between the first sleeve section 101, the second sleeve section 102 and the third sleeve section 103 can be adjusted according to the needs of the operation, so as to meet the different length requirements of the sleeve body 1, so that the flexible surgical instrument 2 can accurately and flexibly enter the patient's body and accurately reach the affected area, ensuring the smooth and safe operation. Of course, a first limiting convex step 109 can also be set on the inner wall of the third sleeve section 103, and a second limiting convex step 110 can be set on the outer wall of the second sleeve 102. During the extension process of the third sleeve section 103 relative to the second sleeve section 102, the first limiting convex step 109 can be offset against the second limiting convex step 110 to limit the axial movement position of the second sleeve section 102 and the third sleeve section 103.

[0058] Of course, the sleeve body 1 is not limited to the first sleeve segment 101, the second sleeve segment 102 and the third sleeve segment 103. According to actual use requirements, the sleeve body 1 may also include multiple sleeve segments, the number of which is greater than or equal to 4, and each sleeve segment is sequentially sleeved, so that a telescopic sleeve structure with multiple telescopic segments is formed by the cooperation of multiple sleeve segments. Among them, between two adjacent sleeve segments, one sleeve segment can move axially and is sleeved on the outside of the other sleeve segment in a limited manner, and multiple sleeve segments cooperate to form a telescopic sleeve structure, and the interiors of the multiple sleeve segments are interconnected to form a guide channel 108; between two adjacent sleeve segments, the sleeve segment located on the outside has a slide groove 106, and the sleeve segment located on the inside is provided with a limit block 107, and the limit block 107 cooperates with the slide groove 106 to limit the axial movement position of the two adjacent sleeve segments to meet different length requirements of the sleeve body 1. In addition, a first limiting convex step 109 may be provided on the inner wall of the sleeve section located on the outside, and a second limiting convex step 110 may be provided on the outer wall of the sleeve section located on the inside. During the relative movement of the two adjacent sleeve sections, the first limiting convex step 109 can be offset against the second limiting convex step 110 to limit the axial movement position of the two adjacent sleeve sections. In actual use, the length of the sleeve body 1 can be flexibly adjusted according to surgical requirements. The longer the sleeve body 1 is, the more positions of the flexible surgical instrument 2 are located in the sleeve body 1, and the more stable the flexible surgical instrument 2 is, and the bending and folding phenomenon will not occur.

[0059] Furthermore, a sealing ring is provided at the joint position of two adjacent sleeve sections, which can not only ensure the seal between the two adjacent sleeve sections, but also play a certain damping role, so that the two sleeve sections can perform telescopic movements when subjected to tension, thereby achieving a positioning effect. Specifically, a sealing ring is provided between the outer wall of the first sleeve section 101 and the inner wall of the second sleeve section 102, and the sealing ring can be fixed on the outer wall of the first sleeve section 101, and the sealing ring is connected to the inner wall of the second sleeve section 102 in a sliding and sealing manner, or the sealing ring can be fixed on the inner wall of the second sleeve section 102, and the sealing ring is connected to the outer wall of the first sleeve section 101 in a sliding and sealing manner. And / or, a sealing ring is provided between the outer wall of the second casing section 102 and the inner wall of the third casing section 103, the sealing ring can be fixed on the outer wall of the second casing section 102, and the sealing ring is slidably sealed to the inner wall of the third casing section 103, or the sealing ring can be fixed on the inner wall of the third casing section 103, and the sealing ring is slidably sealed to the outer wall of the second casing section 102. The sealing ring can be, but is not limited to, a rubber sealing ring.

[0060] Further, in each casing section, sealing plugs are respectively provided at the end of the casing section at the front end and the end of the casing section at the rear end (e.g., in the first casing section 101, the second casing section 102 and the third casing section 103, the rear end of the first casing section 101 and the front end of the third casing section 103), so as to form a closed space in each casing section, the guide wire 2 is located in the closed space, and both ends of the guide wire 2 need to pass through the sealing plugs and extend to the outer wall of the casing section. The sealing plug can be, but is not limited to, a rubber plug.

[0061] In an optional embodiment of the present invention, Figure 1 , Figures 6 to 8 As shown, at least one end of the sleeve body 1 is provided with a connection portion for detachably connecting to a surgical robot, so as to connect the flexible surgical instrument guide sleeve of the utility model to the surgical robot and perform surgical treatment on the patient through the surgical robot.

[0062] Further, such as Figure 1 , Figures 6 to 8 As shown, the connection part includes a first connection part 104 and / or a second connection part 105, the first connection part 104 includes a flange joint; the second connection part 105 includes a threaded structure. The flange joint can be set at the tail of the cannula section at the rear end (the end farther from the patient during surgery), and the threaded structure can be set at the head of the cannula section at the front end (the end closer to the patient during surgery). The flange joint can be used to connect with the surgical robot, and the guide arm vascular sheath can be connected with the threaded structure to achieve a detachable connection of the flexible surgical instrument guide cannula. Of course, in actual surgery, other connection structures can also be set for connection with different surgical instruments.

[0063] In an optional embodiment of the present invention, Figure 2 , Figure 3 , Figure 5As shown, the slide groove 106 is a strip groove extending along the axial direction of the sleeve body 1, and the slide groove 106 is connected to the inside of the second sleeve section 102. A limiting boss 1061 extending toward the inside of the slide groove 106 is provided at the end of the slide groove 106 or near the end thereof, and the limiting block 107 can slide to a position against the limiting boss 1061 to achieve elongation limiting of the two sleeve sections. Of course, the limiting boss 1061 may not be provided, and when the limiting block 107 slides along the slide groove 106 to its end, it will abut against the inner wall of the end of the slide groove 106, which can also play a limiting role. However, if a limiting boss 1061 is provided, a snap-fit ​​structure may be provided between the limiting boss 1061 and the limiting block 107 (for example, a snap-fit ​​structure that can be matched and snap-fitted is provided on the limiting boss 1061 and the limiting block 107). When the limiting block 107 slides to a position where it abuts against the limiting boss 1061, the limiting block 107 and the limiting boss 1061 may be snap-fitted and locked by the snap-fit ​​structure, thereby ensuring the stability of the connection between the two sets of pipe sections and further ensuring the smooth progress of the operation.

[0064] In an optional embodiment of the present invention, there are multiple slide grooves 106, and the multiple slide grooves 106 are spaced and evenly distributed along the circumference of the second casing section 102; there are multiple limit blocks 107, and the multiple limit blocks 107 are spaced and evenly distributed along the circumference of the first casing section 101, and the limit blocks 107 correspond to the slide grooves 106 one by one, so that the multiple limit blocks 107 can be slidably embedded in the corresponding slide grooves 106, thereby improving the stability of the connection between the two adjacent casing sections and avoiding circumferential rotation between the two adjacent casing sections. Specifically, as Figure 4 , Figure 5 As shown, there are two slide grooves 106, which are mirror-symmetrically arranged relative to the axis of the second sleeve segment 102. There are two limit blocks 107, which are mirror-symmetrically arranged on the outer wall of the first sleeve segment 101 relative to the axis of the first sleeve segment 101. The two limit blocks 107 are slidably embedded in the corresponding slide grooves 106, respectively, which can not only realize the telescopic action of the first sleeve segment 101 and the second sleeve segment 102, but also realize the circumferential limitation of the first sleeve segment 101 relative to the second sleeve segment 102.

[0065] Before use, the flexible surgical instrument guide sleeve of the utility model is Figure 6 , Figure 7As shown, when multiple sleeve sections are overlapped and sleeved together (i.e., the first sleeve section 101 is completely retracted into the second sleeve section 102), the flexible surgical instrument guide sleeve is the shortest at this time, and the flexible surgical instrument 2 can be inserted into the guide channel 108 so that the flexible surgical instrument 2 can pass smoothly. After the flexible surgical instrument 2 passes through the guide channel 108, the axial movement position between the sleeve sections can be adjusted according to the actual needs of the operation to achieve the required length, avoid bending and folding of the flexible surgical instrument 2 during delivery, and connect it to the surgical robot through the connection part located on the sleeve body 1, so that the operation can be performed.

[0066] The characteristics and advantages of the flexible surgical instrument guide sleeve of the utility model are:

[0067] 1. The flexible surgical instrument guide sleeve can guide and limit the slender flexible interventional instruments such as catheters, ensure the accurate delivery of such instruments, effectively reduce the risk of bending of the flexible surgical instrument 2 during delivery, ensure that the flexible surgical instrument 2 can smoothly enter the patient's body and reach the affected area, and ensure the success rate of the operation.

[0068] Second, the flexible surgical instrument guide sleeve is a disposable vascular intervention surgery component, which can be used once after sterilization to effectively solve the problem of cross infection.

[0069] 3. The flexible surgical instrument guide sleeve has detachable connections between the sleeve sections, which is convenient for quick replacement and assembly, thereby improving surgical efficiency and increasing the usability of surgical consumables.

[0070] 4. The flexible surgical instrument guide sleeve has a high degree of integration and better meets the needs of doctors.

[0071] Implementation Method 2

[0072] like Figure 8 As shown, the utility model provides a surgical guide structure, which includes the above-mentioned flexible surgical instrument guide sleeve and a flexible surgical instrument 2, at least part of the flexible surgical instrument 2 passes through the guide channel 108 of the flexible surgical instrument guide sleeve.

[0073] Furthermore, the flexible surgical instrument 2 includes a surgical catheter or a guide wire. Of course, it can also be other elongated flexible surgical instruments 2.

[0074] Furthermore, the inner diameter of the guide channel 108 is larger than the diameter of the catheter or the diameter of the guide wire, so that the diameter or the guide wire can smoothly pass through the guide channel 108 .

[0075] The surgical guide structure of the present invention has the same advantages and features as the above-mentioned flexible surgical instrument guide sleeve, which will not be described in detail here.

[0076] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A flexible surgical instrument guide sleeve, It is characterized in that The flexible surgical instrument guide sleeve comprises a plurality of cylindrical sleeve bodies; The plurality of sleeve bodies at least include a first sleeve segment and a second sleeve segment, the second sleeve segment is axially movable and sleeved on the outside of the first sleeve segment, the first sleeve segment cooperates with the second sleeve segment to form a telescopic sleeve structure, the interior of the first sleeve segment is connected with the interior of the second sleeve segment to form a guide channel for the flexible surgical instrument to pass through; The second sleeve segment and the first sleeve segment have a first limiting portion and a second limiting portion respectively, and the second sleeve segment can move relative to the first sleeve segment to a position where the first limiting portion and the second limiting portion abut against each other, so as to limit the axial movement position of the first sleeve segment and the second sleeve segment.

2. The flexible surgical instrument guide sleeve according to claim 1, It is characterized in that The first limiting portion includes a slide groove located on the second sleeve segment, and the second limiting portion includes a limiting block located on the first sleeve segment. The limiting block can be slidably embedded in the slide groove, and the limiting block can offset at least part of the position of the slide groove to limit the axial movement position of the first sleeve segment and the second sleeve segment.

3. The flexible surgical instrument guide sleeve according to claim 1, It is characterized in that The first limiting portion includes a first limiting step located on the inner wall of the second sleeve segment, and the second limiting portion includes a second limiting step located on the outer wall of the first sleeve segment. The first limiting step can offset the second limiting step to limit the axial movement position of the first sleeve segment and the second sleeve segment.

4. The flexible surgical instrument guide sleeve according to claim 1, It is characterized in that At least one end of the sleeve body is provided with a connecting portion for detachably connecting to a surgical robot.

5. The flexible surgical instrument guide sleeve according to claim 4, It is characterized in that The connecting portion includes a first connecting portion and / or a second connecting portion, The first connection portion includes a flange joint; The second connection portion includes a threaded structure.

6. The flexible surgical instrument guide sleeve according to claim 2, It is characterized in that The slide groove is a strip groove extending along the axial direction of the sleeve body. The slide groove is connected to the interior of the second sleeve section. A limiting boss extending toward the inside of the slide groove is provided at the end of the slide groove or near the end. The limiting block can slide to a position against the limiting boss.

7. The flexible surgical instrument guide sleeve according to claim 6, It is characterized in that There are a plurality of slide grooves, and the plurality of slide grooves are spaced apart from each other along the circumference of the second casing section; There are multiple limit blocks, which are spaced apart along the circumference of the first sleeve section. The limit blocks correspond to the slide grooves one by one, so that the limit blocks can be slidably embedded in the corresponding slide grooves respectively.

8. The flexible surgical instrument guide sleeve according to claim 3, It is characterized in that The first limiting convex step is located at the end of the second sleeve section or on the inner wall close to the end thereof; and / or the second limiting convex step is located at the end of the first sleeve section or on the outer wall close to the end thereof.

9. The flexible surgical instrument guide sleeve according to any one of claims 1 to 8, It is characterized in that The sleeve body further includes a third sleeve segment, which is sleeved on the outer side of the second sleeve segment movably along the axial direction, and the first sleeve segment, the second sleeve segment and the third sleeve segment cooperate to form the telescopic sleeve structure, and the interior of the first sleeve segment, the interior of the second sleeve segment and the interior of the third sleeve segment are connected to form the guide channel; A first limiting portion and a second limiting portion for matching and limiting are provided between the third sleeve segment and the second sleeve segment. The third sleeve segment can move relative to the second sleeve segment to a position where the first limiting portion and the second limiting portion abut against each other, so as to limit the axial movement position of the second sleeve segment and the third sleeve segment.

10. The flexible surgical instrument guide sleeve according to any one of claims 1 to 8, It is characterized in that The sleeve body includes a plurality of sleeve segments, the number of which is greater than or equal to 4, and between two adjacent sleeve segments, one of the sleeve segments can move along the axial direction and is limitedly sleeved on the outside of the other sleeve segment, and the plurality of sleeve segments cooperate to form the telescopic sleeve structure, and the interiors of the plurality of sleeve segments are interconnected to form the guide channel; Between two adjacent sleeve sections, the sleeve section located on the outside has a first limiting portion, and the sleeve section located on the inside has a second limiting portion, and the first limiting portion cooperates with the second limiting portion to limit the axial movement position of the two adjacent sleeve sections.

11. A surgical guide structure, It is characterized in that The surgical guide structure comprises: The flexible surgical instrument guide sleeve according to any one of claims 1 to 10; A flexible surgical instrument, at least part of which passes through the guide channel of the flexible surgical instrument guide sleeve.

12. The surgical guide structure according to claim 11, It is characterized in that The flexible surgical instrument comprises a surgical catheter or a guide wire.

13. The surgical guide structure according to claim 12, It is characterized in that The inner diameter of the guide channel is larger than the diameter of the catheter or the diameter of the guide wire.

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