Auxiliary device for acquiring blood vessels in minimally invasive surgery

Abstract

The invention discloses an auxiliary device for obtaining blood vessels in minimally invasive surgery, and relates to the technical field of medical instruments, the auxiliary device comprises a handle, an endoscope clamp and an adjusting mechanism, and the handle is provided with an expansion tube used for opening a surgical incision; a plurality of endoscope clamps used for clamping endoscopes are arranged along the expansion pipe, each endoscope clamp comprises two opposite clamp bodies, the two clamp bodies can be opened and closed, and each clamp body is provided with a semicircular groove; and the adjusting mechanism is used for opening and closing the clamp body. The expansion tube is arranged on the handle, the endoscope clamp is arranged on the expansion tube, the endoscope clamp is adjusted through the adjusting mechanism to clamp the endoscope so that the endoscope can be installed on the expansion tube, the expansion tube is used for opening a surgical incision, the handle is operated to send the expansion tube and the endoscope into a surgical position of a blood taking tube, and therefore endoscope sending operation is greatly facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an auxiliary device for obtaining blood vessels in minimally invasive surgery. Background Art

[0002] The blood vessels used in surgical operations are usually taken from the patient himself, usually from the internal mammary artery, radial artery and great saphenous vein. Medical staff cut open the skin and subcutaneous tissue, and use special surgical instruments under the endoscope to enter the human body through the surgical incision to obtain blood vessels. Since the skin and subcutaneous tissue are contractile, the surgical incision is naturally closed after the skin is cut open, which makes it difficult to complete the insertion of the endoscope, and it is inconvenient to operate the endoscope. Summary of the invention

[0003] The main purpose of this application is to provide an auxiliary device for obtaining blood vessels in minimally invasive surgery, aiming to solve the above-mentioned technical problems.

[0004] The technical solutions adopted in this application are as follows: An auxiliary device for obtaining blood vessels in minimally invasive surgery, comprising: A handle, wherein the handle is provided with an expansion tube for expanding the surgical incision; Endoscope clamps, a plurality of endoscope clamps for clamping endoscopes are arranged along the expansion tube, each of the endoscope clamps comprises two clamp bodies arranged opposite to each other, the two clamp bodies can be opened and closed, and each of the clamp bodies is provided with a semicircular groove; An adjusting mechanism, the adjusting mechanism is used to enable the clamp to open and close; Wherein, the regulating mechanism comprises: A worm, the worm being rotatably disposed on the handle; A trigger, wherein the trigger is coaxially arranged with the worm; A guide sleeve, the guide sleeve is rotatably arranged inside the handle, and the side wall of the guide sleeve is provided with arc guide grooves along the front and rear sides; A worm wheel, the worm wheel is sleeved on the outer wall of the guide sleeve, and the worm wheel is meshed with the worm; An adjusting rod, the adjusting rod can be moved along the axial direction of the expansion tube and is restricted from rotating, and one end of the adjusting rod is movably arranged in the guide sleeve, the outer wall of the adjusting rod is integrally formed with a slider head slidably arranged in the arc guide groove, and the adjusting rod is provided with a conical head corresponding to each endoscope clamp; When the trigger is pulled, the worm drives the worm wheel to rotate to drive the guide sleeve to rotate synchronously, and the slider head is linked to move along the arc guide groove so that the adjustment rod moves backward and drives the conical head into the semicircular groove between the two clamps, thereby opening the endoscope clamp to place the endoscope.

[0005] Optionally, the expansion tube is provided with a mirror clamp cross guide groove along the radial direction, the clamp body includes a clamping portion and a mounting portion, the mounting portion is cross-shaped and slidably cooperates with the mirror clamp cross guide groove.

[0006] Optionally, the clamping portion is provided with a plurality of anti-slip grooves along the axial direction.

[0007] Optionally, the expansion tube is provided with a variable diameter long hole along the axial direction, and the adjustment rod is slidably arranged in the variable diameter long hole.

[0008] Optionally, the variable diameter long hole is respectively provided with a square hole cavity and a plurality of diameter-enlarging hole cavities, and the conical head is movably arranged in the diameter-enlarging hole cavity.

[0009] Optionally, the conical head is located on a side of the endoscope clamp away from the guide sleeve.

[0010] Optionally, the adjusting rod includes a first round rod segment, a square rod segment and a second round rod segment, the first round rod segment and the square rod segment are arranged in the square hole cavity, and the first round rod segment extends into the guide sleeve, the slider head is integrally formed with the first round rod segment, and the plurality of conical heads are integrally formed with the second round rod segment.

[0011] Optionally, a gear cavity is provided in the handle, the gear cavity is communicated with the variable diameter long hole, a T-shaped shaft is provided on the inner wall of the gear cavity, and the guide sleeve is rotatably assembled on the T-shaped shaft.

[0012] Compared with the prior art, the beneficial effects of this application are: An auxiliary device for obtaining blood vessels in minimally invasive surgical operations proposed in an embodiment of the present application includes a handle, an endoscope clamp and an adjustment mechanism. An expansion tube is arranged on the handle, and the endoscope clamp is arranged on the expansion tube. The endoscope clamp is adjusted by the adjustment mechanism to clamp the endoscope so that the endoscope is installed on the expansion tube. The expansion tube is used to expand the surgical incision. The handle is operated to send the expansion tube together with the endoscope into the surgical position for obtaining blood vessels, thereby greatly facilitating the endoscope sending operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of an auxiliary device for obtaining blood vessels in minimally invasive surgery provided in an embodiment of the present application at one viewing angle; Figure 2 A schematic diagram of the structure of the auxiliary device for obtaining blood vessels in minimally invasive surgery provided in an embodiment of the present application from another perspective; Figure 3 An isometric cross-sectional view of an auxiliary device for obtaining blood vessels in minimally invasive surgery provided by an embodiment of the present application at one viewing angle; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle; Figure 6 A front cross-sectional view of an auxiliary device for obtaining blood vessels in minimally invasive surgery provided by an embodiment of the present application; Figure 7 for Figure 6 Cross-sectional view along AA direction; Figure 8 for Figure 6 Cross-sectional view along direction BB.

[0014] Description of the reference numerals in the accompanying drawings: 1-handle, 2-expansion tube, 201-mirror clamp cross guide groove, 3-endoscopic clamp, 31-clamp body, 310-clamping part, 311-installation part, 312-anti-slip pattern, 313-semicircular groove, 4-adjustment mechanism, 41-worm, 42-trigger, 43-worm wheel, 44-guide sleeve, 45-adjustment rod, 450-first round rod segment, 451-square rod segment, 452-second round rod segment, 46-conical head, 5-circular guide groove, 6-slider head, 7-T-type shaft. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0016] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0017] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0018] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0019] Refer to the attached Figures 1 to 8 As shown, an embodiment of the present application provides an auxiliary device for obtaining blood vessels in minimally invasive surgery, including a handle 1, an endoscope clamp 3 and an adjustment mechanism 4. An expansion tube 2 is provided on the handle 1, and a plurality of endoscope clamps 3 are provided along the axial direction of the expansion tube 2. The endoscope clamp 3 can be opened and closed under the adjustment of the adjustment mechanism 4 to clamp the endoscope. The diameter of the expansion tube 2 is larger than the outer diameter of the endoscope. After the endoscope is installed on the expansion tube 2 through the endoscope clamp 3, the skin incision is stretched open by using the expansion tube 2, so that the endoscope can be conveniently inserted through the skin incision by holding the handle 1.

[0020] Specifically: In this embodiment, as 1 to Figure 4 As shown, the expansion tube 2 is a semi-enclosed circular tube, and the unenclosed side is convenient for observing the position of the blood vessel through the endoscope when taking the blood vessel. The expansion tube 2 is provided with a cross guide groove 201 of the mirror clip in the radial direction. The number of the cross guide groove 201 of the mirror clip is the same as that of the endoscope clip 3. The endoscope clip 3 is slidably installed in the cross guide groove 201 of the mirror clip, wherein each endoscope clip 3 includes two clamp bodies 31 arranged opposite to each other, each clamp body 31 includes a clamping portion 310 and a mounting portion 311, and the clamping portion 310 is arc-shaped and has an opening at the top, so that the clamp body 31 does not need to be opened to a large extent to install the endoscope. The mounting portion 311 is cross-shaped and slidably cooperates with the cross guide groove 201 of the mirror clip, so that the clamp body 31 can be opened and closed along the radial movement of the expansion tube 2. At the same time, the outer side of the mounting portion 311 is fixedly connected to the side wall of the cross guide groove 201 of the mirror clip by a spring, and the endoscope clip 3 can be reset and closed by the spring.

[0021] In a preferred embodiment, in order to improve the anti-slip performance of the endoscope after installation, as Figure 5As shown, the inner circle of the clamping portion 310 is provided with a plurality of groups of anti-skid grooves 312, and the anti-skid grooves 312 are perpendicular to the axial direction of the endoscope clamp 3. The anti-skid grooves 312 can increase the friction between the endoscope and the endoscope clamp 3, improve the friction between the endoscope, and be more anti-skid.

[0022] Further, such as Figures 1 to 8 As shown, the adjustment mechanism 4 includes a worm 41, a trigger 42, a guide sleeve 44, a worm wheel 43 and an adjustment rod 45. A gear cavity is provided inside the handle 1, and the gear cavity runs downward through the bottom of the handle 1. The guide sleeve 44 and the worm wheel 43 are both provided in the gear cavity. A T-shaped shaft 7 is integrally formed on the inner wall of the gear cavity, and the guide sleeve 44 is rotatably assembled on the T-shaped shaft 7. The T-shaped shaft 7 plays a role in positioning and installing the guide sleeve 44. The guide sleeve 44 can rotate around the T-shaped shaft 7, and the worm wheel 43 is fixedly sleeved on the outer wall of the guide sleeve 44. The two ends of the worm 41 are rotatably arranged on the handle 1, and the worm 41 is meshed with the worm wheel 43. The trigger 42 is coaxially arranged with the worm 41. By pulling the trigger 42, the worm 41 can be driven to rotate, thereby driving the worm wheel 43 to rotate.

[0023] like Figure 5 As shown, arc guide grooves 5 are provided along the front and rear sides of the side walls of the guide sleeve 44, one end of the adjusting rod 45 is inserted into the guide sleeve 44, and the inner diameter of the guide sleeve 44 is adapted to the outer diameter of the adjusting rod 45, and a slider head 6 is integrally formed on the outer wall of the guide sleeve 44 where the adjusting rod 45 is inserted, and the slider head 6 is slidably provided in the arc guide groove 5, and in a natural state, the slider head 6 is located at one end of the mouth of the guide sleeve 44.

[0024] Among the above, Figures 6 to 8 As shown, the expansion tube 2 is provided with a variable diameter long hole along the axial direction, the variable diameter long hole is communicated with the gear cavity, and the adjustment rod 45 is movably arranged in the variable diameter long hole. The variable diameter long hole is provided with a square hole cavity and a plurality of bracket hole cavities, respectively, and the adjustment rod 45 includes a first round rod segment 450, a square rod segment 451 and a second round rod segment 452, the first round rod segment 450 and the square rod segment 451 are arranged in the square hole cavity, and the first round rod segment 450 and the square rod segment 451 can move forward and backward in the square hole cavity, and the square hole cavity and the square rod segment 451 can prevent the adjustment rod 45 from rotating in the variable diameter long hole. The first round rod segment 450 extends into the guide sleeve 44, the slider head 6 is integrally formed on the first round rod segment 450, and a plurality of conical heads 46 are integrally formed on the second round rod segment. The number of the conical heads 46 is the same as the number of the endoscope clamps 3. The conical heads 46 are located in the expanded bore and move back and forth. The conical heads 46 are located on the side of the endoscope clamp 3 away from the guide sleeve 44.

[0025] In some cases, in the endoscope clamp 3, the mounting portion 311 of each clamp body 31 is provided with a semicircular groove 313, and the semicircular groove 313 is coaxial with the variable diameter long hole. After the two clamp bodies 31 are closed, the semicircular groove 313 forms a full circular groove, and the conical head 46 is coaxial with the full circular groove, and the minimum outer diameter of the conical head 46 is smaller than the diameter of the full circular groove, and the maximum outer diameter of the conical head 46 is larger than the diameter of the full circular groove, so that the conical head 46 can move into the full circular groove with the adjusting rod 45. After that, the clamp bodies 31 on both sides can be stretched open, thereby facilitating the endoscope to be placed in the endoscope clamp 3.

[0026] It can be imagined that when the handle 1 is held by hand and the trigger 42 is pulled by the finger, the trigger 42 rotates to drive the coaxial worm 41 to rotate, and the rotation of the worm 41 drives the worm wheel 43 meshing with it to rotate, and the rotation of the worm wheel 43 drives the guide sleeve 44 fixed thereto to rotate. After the guide sleeve 44 rotates, the adjusting rod 45 cannot rotate due to the restriction of the square rod section 451 and the square hole cavity. At the same time, the adjusting rod 45 is slidably arranged through the slider head 6 and the arc guide groove 5 on the inner wall of the guide sleeve 44. Therefore, under the rotation of the guide sleeve 44, the adjusting rod 45 moves from front to back along the arc guide groove 5, thereby driving the multiple conical heads 46 fixed on the adjusting rod 45 to enter between the semicircular grooves 313 of the two clamps, gradually stretching the two clamping bodies 31 outward, so that the endoscope clamp 3 is opened, making it convenient to put the endoscope into the endoscope clamp 3. It is not difficult to find that when the trigger 42 is in the buckled state, the endoscope clamp 3 will remain in the normally open state, so that it is convenient for medical staff to put the endoscope into the endoscope clamp 3. After the endoscope is put into the endoscope clamp 3, the trigger 42 is released and rotated in the opposite direction to reset. The worm 41 and the worm wheel 43 cooperate to drive the guide sleeve 44 to rotate in the opposite direction. Under the action of the arc guide groove 5, the adjustment rod 45 is reset from back to front, so that the conical head 46 withdraws from the semicircular groove 313, and the adjustment rod 45 returns to the natural state. The clamps 31 on both sides are reset under the action of the spring to clamp the endoscope.

[0027] It can be seen that the auxiliary device for obtaining blood vessels in minimally invasive surgery provided in the embodiment of the present application has the following usage method: First, hold the handle 1 with your hand, pull the trigger 42 with your finger, the endoscope clamp 3 is opened, and the endoscope is loaded into the endoscope clamp 3, then the trigger 42 is reversed to reset, and the endoscope clamp 3 is closed to clamp the endoscope. After the endoscope is loaded into the expansion tube 2, the front end of the endoscope shall not exceed the front end of the expansion tube 2; Next, hold the handle 1 and send the expansion tube 2 together with the endoscope from the surgical incision to the blood vessel removal position. The expansion tube 2 can be used to expand the skin and subcutaneous tissue around the surgical incision to facilitate the insertion of the endoscope. The direction of the endoscope can be adjusted by driving the expansion tube 2 with the handle 1, which makes the operation simpler.

[0028] In summary, an auxiliary device for obtaining blood vessels in minimally invasive surgical operations provided in an embodiment of the present application includes a handle 1, an endoscope clamp 3 and an adjustment mechanism 4. An expansion tube 2 is provided on the handle 1, and the endoscope clamp 3 is provided on the expansion tube 2. The endoscope clamp 3 is adjusted by the adjustment mechanism 4 to clamp the endoscope so that the endoscope is installed on the expansion tube 2. The expansion tube 2 is used to expand the surgical incision. The handle 1 is held to send the expansion tube 2 together with the endoscope into the surgical position for obtaining blood vessels, thereby greatly facilitating the endoscope sending operation.

[0029] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An auxiliary device for obtaining blood vessels in minimally invasive surgery, characterized in that: include: A handle, wherein the handle is provided with an expansion tube for expanding the surgical incision; Endoscope clamps, a plurality of endoscope clamps for clamping endoscopes are arranged along the expansion tube, each of the endoscope clamps comprises two clamp bodies arranged opposite to each other, the two clamp bodies can be opened and closed, and each of the clamp bodies is provided with a semicircular groove; An adjusting mechanism, the adjusting mechanism is used to enable the clamp to open and close; Wherein, the regulating mechanism comprises: A worm, the worm being rotatably disposed on the handle; A trigger, wherein the trigger is coaxially arranged with the worm; A guide sleeve, the guide sleeve is rotatably arranged inside the handle, and the side wall of the guide sleeve is provided with arc guide grooves along the front and rear sides; A worm wheel, the worm wheel is sleeved on the outer wall of the guide sleeve, and the worm wheel is meshed with the worm; An adjusting rod, the adjusting rod can be moved along the axial direction of the expansion tube and is restricted from rotating, and one end of the adjusting rod is movably arranged in the guide sleeve, the outer wall of the adjusting rod is integrally formed with a slider head slidably arranged in the arc guide groove, and the adjusting rod is provided with a conical head corresponding to each endoscope clamp; When the trigger is pulled, the worm drives the worm wheel to rotate to drive the guide sleeve to rotate synchronously, and the slider head is linked to move along the arc guide groove so that the adjustment rod moves backward and drives the conical head into the semicircular groove between the two clamps, thereby opening the endoscope clamp to place the endoscope.

2. The auxiliary device for obtaining blood vessels in minimally invasive surgery according to claim 1, characterized in that: The expansion tube is provided with a mirror clamp cross guide groove along the radial direction, and the clamp body comprises a clamping portion and a mounting portion, wherein the mounting portion is cross-shaped and slidingly matched with the mirror clamp cross guide groove.

3. The auxiliary device for obtaining blood vessels in minimally invasive surgery according to claim 2, characterized in that: The clamping portion is provided with a plurality of anti-slip grooves along the axial direction.

4. The auxiliary device for obtaining blood vessels in minimally invasive surgery according to claim 1, characterized in that: The expansion tube is provided with a variable diameter long hole along the axial direction, and the adjustment rod is slidably arranged in the variable diameter long hole.

5. The auxiliary device for obtaining blood vessels in minimally invasive surgery according to claim 4, characterized in that: The variable diameter long holes are respectively provided with a square hole cavity and a plurality of diameter-enlarging hole cavities, and the conical head is movably arranged in the diameter-enlarging hole cavity.

6. The auxiliary device for obtaining blood vessels in minimally invasive surgery according to claim 5, characterized in that: The conical head is located at a side of the endoscope clamp away from the guide sleeve.

7. The auxiliary device for obtaining blood vessels in minimally invasive surgery according to claim 5, characterized in that: The adjusting rod includes a first round rod segment, a square rod segment and a second round rod segment. The first round rod segment and the square rod segment are arranged in the square hole cavity, and the first round rod segment extends into the guide sleeve. The slider head is integrally formed on the first round rod segment, and the plurality of conical heads are integrally formed on the second round rod segment.

8. The auxiliary device for obtaining blood vessels in minimally invasive surgery according to claim 4, characterized in that: A gear cavity is arranged in the handle, the gear cavity is communicated with the variable diameter long hole, a T-shaped shaft is arranged on the inner wall of the gear cavity, and the guide sleeve is rotatably assembled on the T-shaped shaft.

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