Electrocoagulation surgical scissors and endoscope blood vessel collection device

Abstract

The invention relates to the technical field of medical instruments, in particular to electrocoagulation surgical scissors and an endoscope blood vessel collecting device.A shifting handle piece movably penetrates through a scissor handle shell of the electrocoagulation surgical scissors, a shifting handle assembly is arranged in the shell in a sliding mode, and the shifting handle piece is connected with the shifting handle assembly; the pipe sleeve is connected with the shell, the push-pull steel wire is located in the pipe sleeve, and the push-pull steel wire is connected with the shifting handle assembly; the scissor head assembly is arranged at the end of the pipe sleeve, connected with the push-pull steel wire and suitable for being opened and closed under the push-pull action of the push-pull steel wire, and the scissor head assembly is used for clamping vascular tissue in the closed state. The heating assembly comprises a first heating piece and a second heating piece, the first heating piece conducts vascular tissue cutting, and the second heating piece conducts vascular tissue electrocoagulation. The first heating piece and the second heating piece work at different heating temperatures at the same time, cutting and electrocoagulation sealing of vascular tissue can be completed at a time, surgical tools do not need to be frequently replaced, convenience is provided for doctors, and the surgical time is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an electrocoagulation surgical scissors and an endoscopic blood vessel collection device. Background Art

[0002] Cardiovascular disease is one of the most common and fatal health problems today, of which coronary heart disease and coronary artery disease account for a large part. One of the ways to treat these diseases is to restore or improve the blood supply to the heart through coronary artery bypass grafting (CABG). In CABG surgery, a great saphenous vein or radial artery must be harvested from the patient's body as a graft to ensure adequate blood flow to the heart. In order to minimize the trauma to the patient, reduce the chance of infection and complications, reduce pain, shorten the postoperative recovery time, and make the surgery more aesthetically pleasing, minimally invasive endoscopic surgery is now often used to complete the harvesting of grafts.

[0003] Scissors are the most commonly used surgical instruments in minimally invasive endoscopic surgery. During surgery, scissors are used to cut some tissues in the body, but they cannot stop bleeding. Special instruments are needed to help coagulate blood. Currently, electrocoagulation forceps are generally used to stop bleeding. Electrocoagulation forceps heats the tissue when it contacts the body through the high-frequency and high-voltage current generated by the effective electrode tip, achieving separation and coagulation of body tissues, thereby achieving the purpose of stopping bleeding.

[0004] In current minimally invasive endoscopic surgery, electrocoagulation and cutting are generally performed in two separate steps, using scissors and electrocoagulation forceps respectively. Such frequent replacement of surgical tools brings inconvenience to doctors, prolongs the operation time, and fails to achieve the ideal surgical effect. Summary of the invention

[0005] The present invention provides an electrocoagulation surgical scissors and an endoscopic blood vessel collection device, which are used to solve the inconvenience caused by separate operations of electrocoagulation and cutting in existing minimally invasive endoscopic surgery, and achieve one-time completion of "cutting" and "sealing" of side branch blood vessels in minimally invasive endoscopic surgery.

[0006] The present invention provides an electrocoagulation surgical scissors, comprising a scissors handle, a tube sleeve, a push-pull wire, a scissors head assembly and a heating assembly, wherein the scissors handle comprises a shell, a handle piece is movably provided on the shell, a handle assembly is slidably provided in the shell, and the handle piece is connected to the handle assembly; the first end of the tube sleeve is connected to the shell and is connected to the inner cavity of the shell; the push-pull wire is arranged in the tube sleeve, and the first end of the push-pull wire is connected to the handle assembly; the scissors head assembly is arranged at the second end of the tube sleeve, and the scissors head assembly is connected to the second end of the push-pull wire, and is suitable for opening and closing under the push-pull action of the push-pull wire, and the scissors head assembly is used for clamping vascular tissue in a closed state; the heating assembly is arranged on the scissors head assembly, and the heating assembly comprises a first heating element and second heating elements located on both sides of the first heating element, the first heating element is suitable for cutting vascular tissue when the scissors head assembly is in a closed state, and the second heating element is suitable for electrocoagulation of vascular tissue when the scissors head assembly is in a closed state.

[0007] According to the present invention, an electrocoagulation surgical scissors is provided, wherein the scissors head assembly includes a fixed sleeve, a first blade head and a second blade head, wherein the fixed sleeve is connected to the second end of the tube sleeve, a pin shaft is fixedly penetrated radially in the fixed sleeve, and openings are symmetrically distributed along the pin shaft on the outer peripheral surface of the fixed sleeve; the middle parts of the first blade head and the second blade head are crossed and rotatably sleeved on the pin shaft, the front parts of the first blade head and the second blade head are respectively located at the two openings, and the rear parts of the first blade head and the second blade head are connected to the push-pull wire through a driving connection assembly.

[0008] According to the electrocoagulation surgical scissors provided by the present invention, a first strip-shaped oblique groove is opened at the rear of the first blade head, and a second strip-shaped oblique groove is opened at the rear of the second blade head. The first strip-shaped oblique groove and the second strip-shaped oblique groove are arranged opposite to each other and have opposite inclination angles.

[0009] The drive connection assembly includes a connecting piece and a push-pull drive shaft, the connecting piece is a fork-shaped piece, one end of the connecting piece is connected to the push-pull steel wire, the two ends of the push-pull drive shaft are passed through the two fork-shaped parts at the other end of the connecting piece, and the middle part of the push-pull drive shaft is passed through the first strip-shaped inclined groove and the second strip-shaped inclined groove in sequence.

[0010] According to the electrocoagulation surgical scissors provided by the present invention, the first heating element and the second heating element are located between the front parts of the first blade head and the second blade head, the first heating element is a strip-shaped structure, the second heating element is a U-shaped structure, and the first heating element is located above the middle mouth of the second heating element.

[0011] According to an electrocoagulation surgical scissors provided by the present invention, a fixing groove is provided at the end of the second blade head facing away from the first blade head, the second heating element is located on the second blade head, and the end of the second heating element is bent toward the fixing groove so that the second heating element is fixed to the second blade head, and a barb is connected to the end of the first heating element, and the end of the barb is clamped in the fixing groove.

[0012] According to the electrocoagulation surgical scissors provided by the present invention, the front parts of the first blade head and the second blade head are both covered with silicone sleeves.

[0013] According to the present invention, a pair of electrocoagulation surgical scissors is provided, the handle assembly includes a toggle piece, a wire connector, a guide column and a connecting column, wherein one end of the toggle piece is connected to the handle piece, and the other end is hinged to the inner wall of the shell through a hinge shaft, and the two side surfaces of the toggle piece form an arc structure; the wire connector is located on one side of the toggle piece and contacts the side surface of the toggle piece, an installation cavity is formed in the wire connector, a wire base is fixed at one end of the installation cavity away from the toggle piece, and the first end of the push-pull wire is connected to the wire base; the guide column is located on the other side of the toggle piece and contacts the side surface of the toggle piece; the connecting column sequentially passes through the guide column and the toggle piece, and is fixedly connected to the wire connector.

[0014] According to the electrocoagulation surgical scissors provided by the present invention, both ends of the connecting column are formed with limiting portions, the limiting portion at one end of the connecting column is clamped in the installation cavity of the steel wire connector to connect one end of the connecting column to the steel wire connector, and a spring is sleeved between the limiting portion at the other end of the connecting column and the guide column.

[0015] According to the electrocoagulation surgical scissors provided by the present invention, a feedback trigger switch is fixed to the inner wall of the shell, the feedback trigger switch at least includes a closing feedback point and an opening feedback point, and the toggle member at least includes a middle position and a rear position.

[0016] When the toggle member is in the middle position, the toggle member contacts the closing feedback point of the feedback trigger switch, and the scissor head assembly is in a closed state; when the toggle member is in the rear position, the toggle member contacts the opening feedback point of the feedback trigger switch, and the scissor head assembly is in an open state.

[0017] The present invention also provides an endoscopic blood vessel collection device, comprising an operating handle, an endoscope and any one of the above-mentioned electrocoagulation surgical scissors, wherein the endoscope is horizontally inserted into the operating handle from one end of the operating handle, and the electrocoagulation surgical scissors are obliquely inserted into the operating handle from one end of the operating handle, and the tube sheath of the electrocoagulation surgical scissors located in the operating handle is arranged parallel to the endoscope.

[0018] The electrocoagulation surgical scissors and endoscopic blood vessel collection device provided by the present invention drive the handle assembly to slide in the shell by toggling the handle piece, and the handle assembly drives the push-pull wire to control the scissor head assembly. The handle piece is toggled to the right, and the push-pull wire pulls the scissor head assembly to open the scissor head assembly, and the scissor head assembly is extended above and below the vascular tissue. Then, the handle piece is toggled to the left, and the push-pull wire pushes the scissor head assembly to close the scissor head assembly to clamp the vascular tissue. At this time, the vascular tissue can be decomposed, cut, and electrocoagulated and sealed by the first heating element and the second heating element at the same time. The first heating element and the second heating element use different heating temperatures, and the first heating element and the second heating element work at the same time, which can complete the cutting and electrocoagulation sealing of the vascular tissue at one time, and there is no need to frequently change surgical tools, which provides convenience for doctors and saves operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the electrocoagulation surgical scissors provided by the present invention.

[0021] Figure 2 It is a schematic diagram of the axial structure of the scissor head assembly provided by the present invention.

[0022] Figure 3 It is a schematic diagram of the exploded structure of the scissor head assembly provided by the present invention.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the scissors handle provided by the present invention.

[0024] Figure 5 It is a schematic structural diagram of the endoscopic blood vessel collection device provided by the present invention.

[0025] Figure numerals: 1. Scissors handle; 11. Shell; 12. Handle piece; 13. Handle assembly; 131. Toggle piece; 132. Steel wire connector; 133. Steel wire base; 134. Guide column; 135. Connecting column; 136. Spring; 2. Sleeve; 3. Push-pull steel wire; 4. Scissors head assembly; 41. Fixed sleeve; 411. Pin; 412. Opening; 42. First blade; 421. First strip-shaped bevel groove; 43. Second blade; 431. Second strip-shaped bevel groove; 44. Drive connection assembly; 441. Connecting piece; 442. Push-pull drive shaft; 45. Silicone sleeve; 5. First heating element; 6. Second heating element; 7. Barb piece; 8. Operating handle; 9. Endoscope. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0031] Combine the following Figures 1 to 5 The specific structure and working process of the electrocoagulation surgical scissors and the endoscopic blood vessel collection device of the present invention are described.

[0032] One embodiment of the present invention provides an electrocoagulation surgical scissors, combined with Figure 1 and Figure 2 As shown, it includes a scissors handle 1, a sleeve 2, a push-pull wire 3, a scissors head assembly 4 and a heating assembly, wherein the scissors handle 1 includes a shell 11, a handle piece 12 is movably provided on the shell 11, a handle assembly 13 is slidably provided in the shell 11, and the handle piece 12 is connected to the handle assembly 13; the first end of the sleeve 2 is connected to the shell 11 and is connected to the inner cavity of the shell 11; the push-pull wire 3 is arranged in the sleeve 2, and the first end of the push-pull wire 3 is connected to the handle assembly 13; the scissors head assembly 4 is arranged at the second end of the sleeve 2, and the scissors head assembly 4 is connected to the second end of the push-pull wire 3, and is suitable for opening and closing under the push-pull action of the push-pull wire 3, and the scissors head assembly 4 is used to clamp vascular tissue in the closed state; the heating assembly is arranged on the scissors head assembly 4, and the heating assembly includes a first heating element 5 and a second heating element 6 located on both sides of the first heating element 5, the first heating element 5 is suitable for cutting vascular tissue when the scissors head assembly 4 is in the closed state, and the second heating element 6 is suitable for electrocoagulation of vascular tissue when the scissors head assembly 4 is in the closed state.

[0033] It can be understood that the electrocoagulation surgical scissors of this embodiment can be used in endoscopic blood vessel harvesting surgery. By turning the handle 12, the handle assembly 13 is driven to slide in the housing 11, and the handle assembly 13 drives the push-pull wire 3 to control the scissor head assembly 4. The push-pull wire 3 has a certain rigidity and can be bent to achieve the transmission of push-pull force. Figure 1 As shown, by toggling the handle 12 to the right, the push-pull wire 3 pulls the scissor head assembly 4 to open the scissor head assembly 4 and insert the scissor head assembly 4 into the upper and lower parts of the vascular tissue. Then, by toggling the handle 12 to the left, the push-pull wire 3 pushes the scissor head assembly 4 to close the scissor head assembly 4 and clamp the vascular tissue. At this time, the first heating element 5 and the second heating element 6 can simultaneously decompose and cut the vascular tissue and perform electrocoagulation sealing.

[0034] It should be understood that when the tissue is heated above 100°C, the vascular tissue will be decomposed and thus "cut". However, when the tissue is heated to a temperature between 50°C and 90°, the vascular tissue will simply be "sealed" or "welded" to adjacent tissue. In this embodiment, the first heating element 5 and the second heating element 6 use different heating temperatures. The first heating element 5 is heated above 100°C to form a cut on the vascular tissue, while the second heating element 6 is heated to a temperature between 50°C and 90° to form an electrocoagulation seal on the vascular tissue. The first heating element 5 and the second heating element 6 work simultaneously, and the cutting and electrocoagulation sealing of the vascular tissue can be completed at one time. There is no need to frequently change surgical tools, which provides convenience for doctors and saves operation time.

[0035] In some embodiments of the electrocoagulation surgical scissors of the present invention, combined with Figure 2 and Figure 3 As shown, the scissor head assembly 4 includes a fixed sleeve 41, a first blade head 42 and a second blade head 43, wherein the fixed sleeve 41 is connected to the second end of the pipe sleeve 2, a pin shaft 411 is fixedly penetrated radially in the fixed sleeve 41, and openings 412 are symmetrically distributed along the pin shaft 411 on the outer peripheral surface of the fixed sleeve 41; the middle parts of the first blade head 42 and the second blade head 43 are crossed and rotatably sleeved on the pin shaft 411, the front parts of the first blade head 42 and the second blade head 43 are respectively located at the two openings 412, and the rear parts of the first blade head 42 and the second blade head 43 are connected to the push-pull wire 3 through the driving connection assembly 44.

[0036] It can be understood that in this embodiment, the fixing sleeve 41 is connected to the pipe sleeve 2 as a supporting component for the first cutter head 42 and the second cutter head 43. The middle parts of the first cutter head 42 and the second cutter head 43 are cross-pierced on the pin 411 in the fixing sleeve 41. The push-pull wire 3 acts on the first cutter head 42 and the second cutter head 43 through the driving connection component 44, so that the first cutter head 42 and the second cutter head 43 rotate in opposite directions around the pin 411, so that the first cutter head 42 and the second cutter head 43 are opened or closed in the space of two opposite openings 412.

[0037] Specifically, in some embodiments of the electrocoagulation surgical scissors of the present invention, see Figure 3 As shown, a first strip-shaped bevel groove 421 is provided at the rear of the first blade head 42, and a second strip-shaped bevel groove 431 is provided at the rear of the second blade head 43. The first strip-shaped bevel groove 421 and the second strip-shaped bevel groove 431 are arranged opposite to each other and have opposite inclination angles. The driving connection assembly 44 includes a connecting member 441 and a push-pull driving shaft 442. The connecting member 441 is a fork-shaped member. One end of the connecting member 441 is connected to the push-pull steel wire 3. The two ends of the push-pull driving shaft 442 are penetrated by two fork-shaped parts at the other end of the connecting member 441. The middle part of the push-pull driving shaft 442 is penetrated by the first strip-shaped bevel groove 421 and the second strip-shaped bevel groove 431 in sequence.

[0038] It can be understood that the push-pull wire 3 acts on the first blade head 42 and the second blade head 43 through the driving connection assembly 44. Specifically, one end of the connecting member 441 of the driving connection assembly 44 is connected to the push-pull wire 3 to achieve synchronous movement with the push-pull wire 3. The two fork-shaped parts of the connecting member 441 are provided with a push-pull drive shaft 442, which is used to drive the first blade head 42 and the second blade head 43 to move in the opposite direction. The push-pull drive shaft 442 passes through the first strip-shaped inclined groove 421 and the second strip-shaped inclined groove 431, see Figure 3 As shown, when the connecting member 441 is pulled to move to the right, the push-pull drive shaft 442 moves in the first strip-shaped bevel groove 421 and the second strip-shaped bevel groove 431. Since the first strip-shaped bevel groove 421 and the second strip-shaped bevel groove 431 are oppositely inclined strip-shaped bevel grooves, as the connecting member 441 moves to the right, the first blade head 42 rotates clockwise around the pin shaft 411, and the second blade head 43 rotates counterclockwise around the pin shaft 411, so that the front parts of the first blade head 42 and the second blade head 43 can achieve an opening effect. Similarly, when the connecting member 441 is pulled to move to the left, the first blade head 42 rotates counterclockwise around the pin shaft 411, and the second blade head 43 rotates clockwise around the pin shaft 411, so that the front parts of the first blade head 42 and the second blade head 43 can achieve a closing effect.

[0039] In other embodiments of the electrocoagulation surgical scissors of the present invention, see Figure 3As shown, the first heating element 5 and the second heating element 6 are located between the front parts of the first cutting head 42 and the second cutting head 43 , the first heating element 5 is a strip-shaped structure, the second heating element 6 is a U-shaped structure, and the first heating element 5 is located above the middle mouth of the second heating element 6 .

[0040] It is understandable that the electrocoagulation surgical scissors of the present invention are to achieve cutting and electrocoagulation sealing at the same time, and the corresponding functions are achieved by the first heating element 5 and the second heating element 6 respectively. In this embodiment, in the vertical direction, the first heating element 5 and the second heating element 6 are arranged up and down, and the first heating element 5 is located at the top, which can cut the vascular tissue at the first time. In the horizontal projection direction, since the second heating element 6 is a U-shaped structure, the second heating element 6 is formed on both sides of the first heating element 5, forming the effect of cutting in the middle and electrocoagulation sealing on both sides.

[0041] Furthermore, a fixing groove is provided at the end of one side of the second cutting head 43 facing away from the first cutting head 42, the second heating element 6 is located on the second cutting head 43, and the end of the second heating element 6 is bent toward the fixing groove so that the second heating element 6 is fixed to the second cutting head 43, and the end of the first heating element 5 is connected to a barb piece 7, and the end of the barb piece 7 is clamped in the fixing groove.

[0042] It should be understood that the resistance value of the conventional electrocoagulation forceps changes too much during heating, resulting in uneven heating, poor blood vessel sealing, reduced surgical efficiency, and increased surgical difficulty. The first heating element 5 and the second heating element 6 of this embodiment are made of Inconel625 alloy material. Inconel625 alloy is a solid solution-strengthened nickel-based deformable high-temperature alloy with molybdenum and niobium as the main strengthening elements. It is mainly composed of nickel and chromium, has excellent corrosion resistance and high strength, and is particularly good in creep under high temperature and extreme environments, thereby ensuring that the resistance value remains unchanged during heating.

[0043] Conventional electrocoagulation forceps use AC control, which will periodically change from positive to negative, and therefore cannot continuously output a stable current. The first heating element 5 and the second heating element 6 in this embodiment use DC control. Since the direction and magnitude of the DC current are constant and there is no frequency or fluctuation, the DC current can provide a very stable current.

[0044] Furthermore, in some specific examples of the electrocoagulation surgical scissors of the present invention, the front of the first blade head 42 and the second blade head 43 are both covered with a silicone sleeve 45. Based on the different heating temperatures used by the first heating element 5 and the second heating element 6 when working, a silicone sleeve 45 that adapts to different temperatures can be selected at the front of the first blade head 42 and the front of the second blade head 43, and can still maintain stable performance under the corresponding temperature environment. The silicone sleeve 45 has excellent heat resistance and can work for a long time at a higher temperature without deformation or damage. The surface flexibility of the silicone sleeve 45 can prevent damage to other tissues of the patient when the scissor head assembly 4 clamps the vascular tissue.

[0045] In some specific embodiments of the electrocoagulation surgical scissors of the present invention, see Figure 4 As shown, the lever assembly 13 includes a toggle member 131, a wire connector 132, a guide column 134 and a connecting column 135, wherein one end of the toggle member 131 is connected to the lever member 12, and the other end is hinged to the inner wall of the shell 11 through a hinge shaft, and the two side surfaces of the toggle member 131 form an arc structure; the wire connector 132 is located at one side of the toggle member 131 and contacts the side surface of the toggle member 131, and an installation cavity is formed in the wire connector 132, and a wire base 133 is fixed at one end of the installation cavity away from the toggle member 131, and the first end of the push-pull wire 3 is connected to the wire base 133; the guide column 134 is located at the other side of the toggle member 131 and contacts the side surface of the toggle member 131; the connecting column 135 passes through the guide column 134 and the toggle member 131 in sequence, and is fixedly connected to the wire connector 132.

[0046] It can be understood that in this embodiment, the movement of the handle assembly 13 drives the push-pull wire 3 to move, thereby realizing the closing and opening of the scissor head assembly 4, which can be realized by regulating the movement of the toggle member 131 through the handle member 12. Figure 4 As shown, a wire base 133 is fixed in the installation cavity of the wire connector 132, and the wire base 133 is connected to the push-pull wire 3, which passes through the guide column 134 and the toggle member 131 in sequence through the connecting column 135 and connects to the wire connector 132, so that the guide column 134, the connecting column 135 and the wire connector 132 are connected as a whole, and the arc surfaces on both sides of the toggle member 131 are respectively in contact with the wire connector 132 and the guide column 134. When the handle 12 controls the toggle member 131 to rotate left or right, the toggle member 131 will touch and push the wire connector 132 and the guide column 134, so that the guide column 134, the connecting column 135 and the wire connector 132 move as a whole, and then the push-pull wire 3 can achieve a pushing or pulling effect.

[0047] Further, in some specific examples, both ends of the connecting column 135 are formed with a limiting portion, and the limiting portion at one end of the connecting column 135 is clamped in the installation cavity of the steel wire connector 132, so that one end of the connecting column 135 is connected to the steel wire connector 132, and a spring 136 is sleeved between the limiting portion at the other end of the connecting column 135 and the guide column 134. The two ends of the spring 136 push the limiting portion at one end of the connecting column 135 and the guide column 134 respectively, so that the guide column 134, the connecting column 135 and the steel wire connector 132 are always in a tensioned state as a whole, and the limiting portion at one end of the connecting column 135 can always fit with one end of the installation cavity of the steel wire connector 132 close to the toggle member 131, thereby optimizing the transmission effect of the force.

[0048] Based on the above-mentioned embodiments and examples, in other embodiments of the electrocoagulation surgical scissors of the present invention, a feedback trigger switch is fixed on the inner wall of the shell 11 of the scissors handle 1, and the feedback trigger switch includes at least a closing feedback point and an opening feedback point, and the toggle member 131 includes at least a middle position and a rear position.

[0049] It should be understood that when the toggle member 131 is in the middle position, the toggle member 131 contacts the closing feedback point of the feedback trigger switch, and the scissor head assembly 4 is in a closed state; when the toggle member 131 is in the rear position, the toggle member 131 contacts the opening feedback point of the feedback trigger switch, and the scissor head assembly 4 is in an open state.

[0050] It can be understood that the feedback trigger switch of this embodiment is a device that allows the doctor to have a clear tactile sensation when operating the electrocoagulation surgical scissors. It can be a mechanical touch structure. When the toggle member 131 is moved to different gears, the doctor obtains a touch feedback tactile signal through mechanical touch, and clearly understands the state of the scissor head assembly 4 at this time.

[0051] Combined with the structures of the above-mentioned embodiments, the electrocoagulation surgical scissors of the present invention have a pre-tightening function, that is, under normal conditions, the toggle member 131 is in the middle gear, and the scissor head assembly 4 is in a closed state. In this way, during the collection process, the blood vessel can be effectively prevented from shifting or slipping during the cutting or separation process, reducing damage to the blood vessel caused by over-tight grasping, helping to control bleeding at the collection site, and greatly improving operating efficiency and enhancing safety.

[0052] Another aspect of the present invention further provides an endoscopic blood vessel collection device. In some embodiments of the endoscopic blood vessel collection device of the present invention, see Figure 5 As shown, it includes an operating handle 8, an endoscope 9 and an electrocoagulation surgical scissors of any one of the above-mentioned embodiments, the endoscope 9 is horizontally inserted into the operating handle 8 from one end of the operating handle 8, and the electrocoagulation surgical scissors are obliquely inserted into the operating handle 8 from one end of the operating handle 8, and the tube sheath 2 of the electrocoagulation surgical scissors located in the operating handle 8 is arranged parallel to the endoscope 9.

[0053] It can be understood that, since the endoscopic blood vessel harvesting device in the present embodiment includes the electrocoagulation surgical scissors of any one of the above-mentioned embodiments, the endoscopic blood vessel harvesting device in the present embodiment necessarily has the functions and effects of the electrocoagulation surgical scissors of the present invention. When the endoscopic blood vessel harvesting device in the present embodiment is used to perform endoscopic blood vessel harvesting surgery, the endoscope 9 is used to observe the target blood vessels and the surrounding environment of the patient, and the electrocoagulation surgical scissors are used to accurately achieve "cutting" and "sealing" of vascular tissue (side branch vessels) at the same time, without the need to frequently replace surgical tools, which provides convenience for doctors and saves operation time.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrocoagulation surgical scissors, characterized in that: include: A scissors handle (1), the scissors handle (1) comprising a shell (11), a handle piece (12) movably provided on the shell (11), a handle assembly (13) slidably provided in the shell (11), and the handle piece (12) connected to the handle assembly (13); A pipe sleeve (2), wherein a first end of the pipe sleeve (2) is connected to the shell (11) and is in communication with an inner cavity of the shell (11); A push-pull steel wire (3) is arranged in the pipe sleeve (2), and a first end of the push-pull steel wire (3) is connected to the lever assembly (13); A scissor head assembly (4) is arranged at the second end of the tube sleeve (2); the scissor head assembly (4) is connected to the second end of the push-pull steel wire (3) and is suitable for opening and closing under the push-pull action of the push-pull steel wire (3); the scissor head assembly (4) is used to clamp blood vessel tissue in the closed state; A heating component is arranged on the scissor head component (4), the heating component comprising a first heating element (5) and second heating elements (6) located on both sides of the first heating element (5), the first heating element (5) being suitable for cutting blood vessel tissue when the scissor head component (4) is in a closed state, and the second heating element (6) being suitable for electrocoagulating blood vessel tissue when the scissor head component (4) is in a closed state.

2. The electrocoagulation surgical scissors according to claim 1, characterized in that: The scissor head assembly (4) comprises: A fixing sleeve (41), the fixing sleeve (41) being connected to the second end of the pipe sleeve (2), a pin shaft (411) being fixedly penetrated in the fixing sleeve (41) in a radial direction, and openings (412) being symmetrically distributed along the pin shaft (411) on the outer circumferential surface of the fixing sleeve (41); A first cutter head (42) and a second cutter head (43), wherein the middle parts of the first cutter head (42) and the second cutter head (43) intersect and are rotatably mounted on the pin shaft (411), the front parts of the first cutter head (42) and the second cutter head (43) are respectively located at the two openings (412), and the rear parts of the first cutter head (42) and the second cutter head (43) are connected to the push-pull wire (3) via a driving connection assembly (44).

3. The electrocoagulation surgical scissors according to claim 2, characterized in that: A first strip-shaped oblique groove (421) is formed at the rear of the first blade head (42), and a second strip-shaped oblique groove (431) is formed at the rear of the second blade head (43), wherein the first strip-shaped oblique groove (421) and the second strip-shaped oblique groove (431) are arranged opposite to each other and have opposite inclination angles; The driving connection assembly (44) comprises a connecting piece (441) and a push-pull driving shaft (442), wherein the connecting piece (441) is a fork-shaped piece, one end of the connecting piece (441) is connected to the push-pull steel wire (3), two ends of the push-pull driving shaft (442) are inserted through two fork-shaped parts at the other end of the connecting piece (441), and the middle part of the push-pull driving shaft (442) is inserted through the first strip-shaped inclined groove (421) and the second strip-shaped inclined groove (431) in sequence.

4. The electrocoagulation surgical scissors according to claim 2, characterized in that: The first heating element (5) and the second heating element (6) are located between the front parts of the first blade head (42) and the second blade head (43); the first heating element (5) is a strip-shaped structure, the second heating element (6) is a U-shaped structure, and the first heating element (5) is located above the middle opening of the second heating element (6).

5. The electrocoagulation surgical scissors according to claim 4, characterized in that: A fixing groove is provided at an end portion of the second cutting head (43) facing away from the first cutting head (42); the second heating element (6) is located on the second cutting head (43); and an end portion of the second heating element (6) is bent toward the fixing groove so that the second heating element (6) is fixed to the second cutting head (43); and a barb element (7) is connected to an end portion of the first heating element (5); and an end portion of the barb element (7) is clamped in the fixing groove.

6. The electrocoagulation surgical scissors according to claim 5, characterized in that: The front parts of the first blade head (42) and the second blade head (43) are both covered with a silicone sleeve (45).

7. The electrocoagulation surgical scissors according to any one of claims 1 to 6, characterized in that: The handle assembly (13) comprises: A toggle member (131), one end of the toggle member (131) is connected to the handle member (12), and the other end is hinged to the inner wall of the housing (11) via a hinge shaft, and two side surfaces of the toggle member (131) form an arc structure; A steel wire connecting member (132) is located on one side of the toggle member (131) and contacts the side surface of the toggle member (131). A mounting cavity is formed in the steel wire connecting member (132). A steel wire base (133) is fixed at one end of the mounting cavity away from the toggle member (131). The first end of the push-pull steel wire (3) is connected to the steel wire base (133). A guide post (134) located on the other side of the toggle member (131) and in contact with a side surface of the toggle member (131); A connecting column (135), wherein the connecting column (135) sequentially passes through the guide column (134) and the toggle member (131), and is fixedly connected to the steel wire connecting member (132).

8. The electrocoagulation surgical scissors according to claim 7, characterized in that: Both ends of the connecting column (135) are formed with limiting portions, and the limiting portion at one end of the connecting column (135) is snap-fitted into the mounting cavity of the steel wire connector (132) so that one end of the connecting column (135) is connected to the steel wire connector (132), and a spring (136) is sleeved between the limiting portion at the other end of the connecting column (135) and the guide column (134).

9. The electrocoagulation surgical scissors according to claim 7, characterized in that: A feedback trigger switch is fixed on the inner wall of the housing (11), the feedback trigger switch at least comprising a closing feedback point and an opening feedback point, and the toggle member (131) at least comprising a middle position and a rear position; When the toggle member (131) is in the middle position, the toggle member (131) contacts the closing feedback point of the feedback trigger switch, and the scissor head assembly (4) is in a closed state; when the toggle member (131) is in the rear position, the toggle member (131) contacts the opening feedback point of the feedback trigger switch, and the scissor head assembly (4) is in an open state.

10. An endoscopic blood vessel collection device, characterized in that: It comprises an operating handle (8), an endoscope (9) and the electrocoagulation surgical scissors according to any one of claims 1 to 9, wherein the endoscope (9) is horizontally inserted into the operating handle (8) from one end of the operating handle (8), and the electrocoagulation surgical scissors is obliquely inserted into the operating handle (8) from one end of the operating handle (8), and the tube sleeve (2) of the electrocoagulation surgical scissors located in the operating handle (8) is arranged parallel to the endoscope (9).

Images